turing_tarpit.html

   1 <html>
   2 <title>Turing Tarpit Simulator</title>
   3 <noscript>
   4         <b>Your browser does not support JavaScript or JavaScript is disabled.</b>
   5 </noscript>
   6 <script>
   7
   8 /* internal values for simulated computer */
   9 var ins_pointer = 0;                    /* instruction pointer */
  10 var ins_pointer_changed = 0;    /* bool set to 1 if ins pointer has changed in the last step */
  11 var ins_pointer_last_address = 0;       /* address of ins pointer in last step */
  12 var dat_pointer = 0;                    /* data pointer */
  13 var dat_pointer_changed = 0;            /* bool set to 1 if data pointer has changed in the last step */
  14 var dat_pointer_last_address = 0;       /* address of data pointer in last step */
  15 var ram_last_address = 0;               /* address of RAM updated in last step */
  16 var breakpoints = 1;                    /* bool set to 0 to ignore breakpoints */
  17 var ram = new Array();                  /* memory of virtual machine */
  18 var jmp = new Array();                  /* used as a stack to jump from one command to another */
  19 var ins = null;                         /* current instruction from code */
  20 var halt = false;                       /* halts program ASAP */
  21
  22 /* objects that display data to the user */
  23 var disp_docs;
  24 var disp_code;
  25 var disp_ram;
  26 var disp_ins_pointer;
  27 var disp_dat_pointer;
  28 var disp_pointer = "<div id=disp_pointer>&#8658;</div>"; /* data pointer displayed in memory block */
  29
  30 /* select all contents of this input for the convenience of the user */
  31 function select_all(e)
  32 {
  33         document.getElementById(e).focus();
  34         document.getElementById(e).select();
  35 }
  36
  37 /* highlight current instruction running on machine */
  38 function code_highlight(inputEl, selStart, selEnd)
  39 {
  40         if (inputEl.setSelectionRange) {
  41                 inputEl.focus();
  42                 inputEl.setSelectionRange(selStart, selEnd);
  43         } else if (inputEl.createTextRange) {
  44                 var range = inputEl.createTextRange();
  45                 range.collapse(true);
  46                 range.moveEnd('character', selEnd);
  47                 range.moveStart('character', selStart);
  48                 range.select();
  49         }
  50 }
  51
  52 /* turns breakpoints on and off */
  53 function debug_toggle_breakpoints()
  54 {
  55         var button = document.getElementById("dbg_status");
  56         if(breakpoints) {
  57                 breakpoints=0;
  58                 button.innerHTML='<img src="http://opentextbook.info/icons/32x32/bug_delete.png">';
  59         }else {
  60                 breakpoints=1;
  61                 button.innerHTML='<img src="http://opentextbook.info/icons/32x32/bug_add.png">';
  62         }
  63 }
  64
  65 /* removes all breakpoints in source code */
  66 function debug_remove_breakpoints()
  67 {
  68         /* ask user for permission first */
  69         var ans = confirm("Permanently remove all breakpoints from code?");
  70         var code = document.getElementById("code");
  71         if(ans) { code.value = code.value.replace( /\*/g , '' ); }
  72 }
  73
  74 /* test current code character - return true if it is an instruction */
  75 /* tried to use regex on this and could not get it to work :( */
  76 function tst_inst()
  77 {
  78         if(ins == '+' ||  ins == '-' ||  ins == '>' ||  ins == '<' ||
  79           ins == '*' ||  ins == '.' ||  ins == '[' ||  ins == ']' ||  ins == ',') {
  80                 return true;
  81         }
  82         return false;
  83 }
  84
  85 /* find next instruction in code and move instruction pointer to it */
  86 function fnd_nxt_inst()
  87 {
  88         do {
  89                 if(ins_pointer > disp_code.value.length) { break; } /* must stop at end of code */
  90                 update_ins_pointer(1);
  91                 ins = disp_code.value.substring(ins_pointer-1,ins_pointer); /* get data at ins_pointer location */
  92         }while(!tst_inst());
  93         if(ins_pointer > disp_code.value.length) {
  94                 alert("HALT: Program is Complete");
  95                 halt = true;
  96                 reset();
  97         }
  98
  99         /* highlight code currently executing on screen */
 100         code_highlight(disp_code, ins_pointer-1, ins_pointer);
 101 }
 102
 103 /* find previous instruction in code and move instruction pointer to it */
 104 function fnd_prv_inst()
 105 {
 106         ins_pointer--;
 107         while(ins_pointer >= 0)
 108         {
 109                 ins = disp_code.value.substring(ins_pointer-1, ins_pointer); /* get data at ins_pointer location */
 110                 if(tst_inst()) { return; }
 111                 ins_pointer--;
 112         }
 113         if(ins_pointer == 0) {
 114                 alert("SEGFAULT: Program could not find corresponding jump instruction");
 115                 halt = true;
 116                 reset();
 117         }
 118 }
 119
 120 /* execute next instruction from input */
 121 function exe_nxt_inst()
 122 {
 123         var temp_count = 0;
 124         fnd_nxt_inst();
 125         switch(ins)
 126         {
 127                 case '+':
 128                         ram_modify(dat_pointer, 1);
 129                         break;
 130                 case '-':
 131                         ram_modify(dat_pointer, -1);
 132                         break;
 133                 case '>':
 134                         dat_point_modify(1);
 135                         break;
 136                 case '<':
 137                         dat_point_modify(-1);
 138                         break;
 139                 case '*': /* these are comments - a break from the standard language */
 140                         if(breakpoints) { stop(); }
 141                         break;
 142                 case '.':
 143                         print_mem();
 144                         break;
 145                 case '[':
 146                         jump_fwd();
 147                         break;
 148                 case ']':
 149                         jump_bak();
 150                         break;
 151                 case ',':
 152                         get_byte();
 153                         break;
 154                 default:
 155                         /* must be a comment :) */
 156         }
 157 }
 158
 159 /* if byte at data pointer is = 0, jump forward to instruction after matching ']' command */
 160 function jump_fwd()
 161 {
 162         if(ram[dat_pointer] != 0) { return; }
 163         /* add this jump to stack */
 164         jmp.push('[');
 165         /* loop through code, pushing and popping stack until stack is empty */
 166         while(jmp.length > 0) {
 167                 fnd_nxt_inst();
 168                 if(ins == ']') { jmp.pop();
 169                 } else if (ins == '[') { jmp.push(']'); }
 170         }
 171 }
 172
 173 /* if byte at data pointer is != 0, jump back to instruction after matching '[' command */
 174 function jump_bak()
 175 {
 176         if(ram[dat_pointer] == 0) { return; }
 177         /* add this jump to stack */
 178         jmp.push(']');
 179         /* loop through code, pushing and popping stack until stack is empty */
 180         while(jmp.length > 0 && ins_pointer > 0) {
 181                 fnd_prv_inst();
 182                 if(ins == '[') { jmp.pop();
 183                 } else if (ins == ']') { jmp.push(']'); }
 184         }
 185 }
 186
 187 /* get single byte of input from the user */
 188 function get_byte()
 189 {
 190         var b = prompt("Please Single Byte of Data","");
 191         ram_set(dat_pointer, b.charCodeAt(b));
 192 }
 193
 194 /*
 195         rewind code to beginning reset all memory locations
 196         this simulates rebooting the computer
 197 */
 198 function reset()
 199 {
 200         update_ins_pointer(0);
 201         dat_point_modify(0);
 202         ram_reset();
 203         ram_highlight_clear();
 204         dat_point_highlight();
 205         document.getElementById("output_disp").innerHTML = '';
 206         document.getElementById("addr_0").innerHTML = "0" + disp_pointer;
 207         disp_ins_pointer.style.backgroundColor = "#fff";
 208         dat_point_highlight_clear();
 209         code_highlight(disp_code, 0, 1);
 210 }
 211
 212 /* stop stepping through code on timer if breakpoints enabled */
 213 function stop()
 214 {
 215         halt = true;
 216 }
 217
 218 /* run through program on timer, stopping at breakpoints if enabled */
 219 function run()
 220 {
 221         var total_steps = document.getElementById("code").value.length;
 222         halt = false; /* seems weird, but this is the only way to make the halt work */
 223         while(ins_pointer <= total_steps && halt == false) { step_next(); }
 224 }
 225
 226 /* step forward one instruction */
 227 function step_next()
 228 {
 229         //update_ins_pointer(1);
 230         exe_nxt_inst();
 231         dat_point_highlight();
 232 }
 233
 234 /* more back one instruction - undoes work of previous instruction */
 235 function step_back()
 236 {
 237         update_ins_pointer(-1);
 238         dat_point_highlight();
 239 }
 240
 241 /* update instruction pointer
 242         direction:
 243
 244         1 increment pointer by one
 245         0 set pointer to 0
 246         -1 decrement pointer by one
 247 */
 248 function update_ins_pointer(direction)
 249 {
 250         if(direction < 0 && ins_pointer != 0 ) { ins_pointer--; }
 251         else if (direction == 0 ) { ins_pointer = 0; }
 252         else { ins_pointer++; }
 253         disp_ins_pointer.value =  ins_pointer;
 254         ins_pointer_changed = 1;
 255         ins_point_highlight();
 256 }
 257
 258 /* update instruction pointer and set to new value */
 259 function ins_point_modify_by_address(val)
 260 {
 261         /* instruction pointer can never be less than 0 */
 262         if(val < 0) {
 263                 alert("Instruction Pointer cannot be set less than Zero.");
 264                 disp_ins_pointer.value =  ins_pointer; /* reset val to previous */
 265                 return;
 266         }
 267         if(val > disp_code.value.length) {
 268                 alert("Instruction Pointer cannot be set beyond end of code.\n Current length of code: " + disp_code.value.length);
 269                 disp_ins_pointer.value =  ins_pointer; /* reset val to previous */
 270                 return;
 271         }
 272         ins_pointer = disp_ins_pointer.value;
 273         if(ins_pointer_last_address != ins_pointer) { ins_pointer_changed = 1; }
 274         if(ins_pointer != val) {
 275                 ins_point_highlight();
 276         }
 277 }
 278
 279 /* turns on and off data pointer highlight if it has changed this step */
 280 function ins_point_highlight()
 281 {
 282         if(ins_pointer_changed) {
 283                 disp_ins_pointer.style.backgroundColor = "#ff0";
 284                 ins_pointer_changed = 0;
 285         } else {
 286                 disp_ins_pointer.style.backgroundColor = "#fff";
 287         }
 288 }
 289
 290 /* setup virtual machine - must be called on page load */
 291 function init_form()
 292 {
 293         disp_code  = document.getElementById("code");
 294         disp_ins_pointer = document.getElementById("ins_pointer_disp");
 295         disp_dat_pointer = document.getElementById("dat_pointer_disp");
 296         disp_ram = document.getElementById("ram_disp");
 297         ram_init();
 298         ram_reset();
 299         document.getElementById("addr_0").innerHTML = "0" + disp_pointer;
 300         disp_docs = document.getElementById("docs");
 301
 302         /* put hello world into input window */
 303         var randomnumber = Math.floor(Math.random()*11)
 304         disp_code.innerHTML = document.getElementById("example_"+randomnumber).innerHTML;
 305 }
 306
 307 /* reset all RAM to 0 */
 308 function ram_reset()
 309 {
 310         var i;
 311         for(i=0; i < 64; i++) {
 312                 ram[i] = 0;
 313                 document.getElementById("ram_"+i).value = ram[i];
 314         }
 315 }
 316
 317 /* update highlight of one memory address and release other highlight if needed */
 318 function ram_highlight(address)
 319 {
 320         var disp_last_address = document.getElementById("ram_"+ram_last_address);
 321         if(disp_last_address == 'undefined') { alert("Last address could not be found."); }
 322         /* highlight background of current address */
 323         document.getElementById("ram_"+address).style.backgroundColor = "#ff0";
 324
 325         /* remove highlight from last address modified */
 326         if(ram_last_address != address){
 327                 if(ram_last_address%2==0) {
 328                         disp_last_address.style.backgroundColor = "#fff";
 329                 } else {
 330                         disp_last_address.style.backgroundColor = "#def";
 331                 }
 332         }
 333 }
 334
 335 /* remove highlight from all memory cells regardless of current status */
 336 function ram_highlight_clear()
 337 {
 338         var i;
 339         for(i=0; i < 64; i++)
 340         {
 341                 if(i%2==0) {
 342                         document.getElementById("ram_"+i).style.backgroundColor = "#fff";
 343                 } else {
 344                         document.getElementById("ram_"+i).style.backgroundColor = "#def";
 345                 }
 346                 document.getElementById("ram_"+i).innerHTML = ram[i];
 347         }
 348 }
 349
 350 /* define RAM on screen */
 351 function ram_init()
 352 {
 353         var i;
 354         var table = "<table id=memory_table>\n";
 355         for(i=0; i < 16; i++){
 356                 if(i%2==0) {
 357                         table += "\t<tr class=even>";
 358                 } else {
 359                         table += "\t<tr class=odd>";
 360                 }
 361                 table += "<td width='32' class=addr id=addr_"+i+">"+i+"</td>";
 362                 table += "<td><input onClick=\"select_all('ram_"+i+"');\" onBlur=\"ram_set("+i+", document.getElementById('ram_"+i+"').value);\" size='3' class=ram id=ram_"+i+" value="+ram[i]+"></td>";
 363
 364                 table += "<td width='32' class=addr id=addr_"+(i+16)+">"+(i+16)+"</td>";
 365                 table += "<td><input onClick=\"select_all('ram_"+(i+16)+"');\" onBlur=\"ram_set("+(i+16)+", document.getElementById('ram_"+(i+16)+"').value);\" size='3' class=ram id=ram_"+(i+16)+" value="+ram[i+16]+"></td>\n";
 366
 367                 table += "<td width='32' class=addr id=addr_"+(i+32)+">"+(i+32)+"</td>";
 368                 table += "<td><input onClick=\"select_all('ram_"+(i+32)+"');\" onBlur=\"ram_set("+(i+32)+", document.getElementById('ram_"+(i+32)+"').value);\" size='3' class=ram id=ram_"+(i+32)+" value="+ram[i+32]+"></td>\n";
 369
 370                 table += "<td width='32' class=addr id=addr_"+(i+48)+">"+(i+48)+"</td>";
 371                 table += "<td><input onClick=\"select_all('ram_"+(i+48)+"');\" onBlur=\"ram_set("+(i+48)+", document.getElementById('ram_"+(i+48)+"').value);\" size='3' class=ram id=ram_"+(i+48)+" value="+ram[i+48]+"></td></tr>\n";
 372         }
 373         table +=  "</table>\n";
 374         disp_ram.innerHTML = table;
 375 }
 376
 377 /*
 378         modify the value at this address - reset RAM highlights for all addresses
 379         1 increment RAM by one
 380         0 set RAM to 0
 381         -1 decrement RAM by one
 382 */
 383 function ram_modify(address, change)
 384 {
 385         if(address < 0 || address > 63) {
 386                 alert("SEGFAULT: Cannot Modify Data Outside of Memory Range");
 387                 halt = true;
 388                 reset();
 389                 return;
 390         }
 391         if (change > 0 ) {
 392                 ram[address]++;
 393         } else if(change < 0 ) {
 394                 ram[address]--;
 395         } else {
 396                 ram[address] = 0;
 397         }
 398         ram_highlight(address);
 399         document.getElementById("ram_"+address).value = ram[address];
 400         ram_last_address = address;
 401 }
 402
 403 /* modify one byte of memory - set to address */
 404 function ram_set(address, val)
 405 {
 406         var prev_value = ram[address];
 407         if(address == 'undefined') { alert("Address not defined for ram_set."); return; }
 408         if(address < 0 || address > 63) {
 409                 alert("SEGFAULT: Cannot Modify Data Outside of Memory Range");
 410                 halt = true;
 411                 reset();
 412                 return;
 413         }
 414         ram[address] = val;
 415         if(prev_value != val) {
 416                 ram_highlight(address);
 417                 document.getElementById("ram_"+address).innerHTML = ram[address];
 418         }
 419         ram_last_address = address;
 420 }
 421
 422 /*
 423         modify state of data pointer
 424         1 increment data pointer by one
 425         0 set data pointer to 0
 426         -1 decrement data pointer by one
 427
 428 */
 429 function dat_point_modify(change)
 430 {
 431         dat_pointer_last_address = dat_pointer;
 432         if (change > 0 ) {
 433                 dat_pointer++;
 434         } else if(change < 0 ) {
 435                 /* could put SEGFAULT here, but C does not have a check for this, so neither will I ;) */
 436                 dat_pointer--;
 437         } else {
 438                 dat_pointer = 0;
 439         }
 440
 441         /* place '>' char next to memory address in table */
 442         if(dat_pointer >= 0 && dat_pointer < 64) {
 443                 document.getElementById("addr_"+dat_pointer).innerHTML = dat_pointer + disp_pointer;
 444         }
 445
 446         /* remove '>' char next to memory address in table */
 447         if(dat_pointer_last_address >= 0 && dat_pointer_last_address < 64) {
 448                 document.getElementById("addr_"+dat_pointer_last_address).innerHTML = dat_pointer_last_address;
 449         }
 450
 451         disp_dat_pointer.value = dat_pointer;
 452         dat_pointer_changed = 1;
 453 }
 454
 455 function dat_point_modify_by_address(val)
 456 {
 457         dat_pointer_last_address = dat_pointer;
 458         dat_pointer = disp_dat_pointer.value;
 459         /* place '>' char next to memory address in table */
 460         if(dat_pointer >= 0 && dat_pointer < 64) {
 461                 document.getElementById("addr_"+dat_pointer).innerHTML = dat_pointer + disp_pointer;
 462         }
 463
 464         /* remove '>' char next to memory address in table */
 465         if(dat_pointer_last_address >= 0 && dat_pointer_last_address < 64) {
 466                 document.getElementById("addr_"+dat_pointer_last_address).innerHTML = dat_pointer_last_address;
 467         }
 468         dat_pointer_changed = 1;
 469         if(dat_pointer_last_address != val) {
 470                 dat_point_highlight();
 471         }
 472 }
 473
 474 /* turns on and off data pointer highlight if it has changed this step */
 475 function dat_point_highlight()
 476 {
 477         if(dat_pointer_changed) {
 478                 disp_dat_pointer.style.backgroundColor = "#ff0";
 479                 dat_pointer_changed = 0;
 480         } else {
 481                 disp_dat_pointer.style.backgroundColor = "#fff";
 482         }
 483
 484         /* as a convenience to the user, set to red if pointer is out of memory range */
 485         if(dat_pointer < 0 || dat_pointer > 63) {
 486                 disp_dat_pointer.style.backgroundColor = "#f00";
 487         }
 488 }
 489
 490 /* remove highlight from data pointer */
 491 function dat_point_highlight_clear()
 492 {
 493         disp_dat_pointer.style.backgroundColor = "#fff";
 494 }
 495
 496 /* print ASCII representation of memory at data pointer */
 497 function print_mem()
 498 {
 499         var x = String.fromCharCode(ram[dat_pointer]);
 500         document.getElementById("output_disp").innerHTML += x;
 501 }
 502
 503 /* documentation stored inside invisible div. This shows its contents. */
 504 function display_docs()
 505 {
 506         disp_docs.style.visibility = "visible";
 507         docs_select("docs_main");
 508 }
 509
 510 /* hide documentation from user */
 511 function hide_docs()
 512 {
 513         disp_docs.style.visibility = "hidden";
 514 }
 515
 516 function docs_select(page)
 517 {
 518         if(page == "basic") {
 519                 document.getElementById("docs_content").innerHTML = document.getElementById("docs_basic").innerHTML;
 520         } else if(page == "features") {
 521                 document.getElementById("docs_content").innerHTML = document.getElementById("docs_features").innerHTML;
 522         } else if(page == "examples") {
 523                 document.getElementById("docs_content").innerHTML = document.getElementById("docs_examples").innerHTML;
 524         } else if(page == "examples2") {
 525                 document.getElementById("docs_content").innerHTML = document.getElementById("docs_examples2").innerHTML;
 526         } else if(page == "ascii") {
 527                 document.getElementById("docs_content").innerHTML = document.getElementById("docs_ascii").innerHTML;
 528         } else {
 529                 document.getElementById("docs_content").innerHTML = document.getElementById("docs_main").innerHTML;
 530         }
 531 }
 532
 533 /*
 534
 535 allows user to kick off example from the help menu.
 536 closes documentation menu, overwrites code with example.
 537 prints error message if something goes wrong.
 538
 539 */
 540 function docs_try(ex)
 541 {
 542         var ans = confirm("This will delete code currently loaded in machine.");
 543         if(!ans) { return; }
 544         hide_docs();                    /* close documentation window */
 545         reset();                        /* reset computer */
 546         if(ex == null) { alert("Example not setup correctly."); return; }
 547         disp_code.innerHTML = document.getElementById(ex).innerHTML;                            /* write data out to code textarea */
 548 }
 549
 550 </script>
 551
 552 <style type="text/css">
 553
 554 body {
 555         font-family: Tahoma, Arial, Helvetica, sans-serif;
 556 }
 557
 558 #disp_pointer {
 559         float:right;
 560         color: #f00;
 561 }
 562
 563 #code_buttons {
 564         position: absolute;
 565         top: 570px;
 566         left: 10px;
 567 }
 568
 569 #input_banner {
 570         position: absolute;
 571         top: 120px;
 572         left: 10px;
 573 }
 574
 575 #da_banner {
 576         position: absolute;
 577         top: 360px;
 578         left: 625px;
 579 }
 580
 581 #ref_banner {
 582         position: absolute;
 583         top: 410px;
 584         left: 625px;
 585 }
 586
 587 #ip_banner {
 588         position: absolute;
 589         top: 315px;
 590         left: 625px;
 591 }
 592
 593 #output_banner {
 594         position: absolute;
 595         top: 120px;
 596         left: 625px;
 597 }
 598
 599 #memory_banner {
 600         position: absolute;
 601         top: 120px;
 602         left: 315px;
 603 }
 604
 605 #input {
 606         position: absolute;
 607         top: 140px;
 608         left: 10px;
 609 }
 610
 611 #ram_disp {
 612         position: absolute;
 613         top: 140px;
 614         left: 315px;
 615 }
 616
 617 #memory_table {
 618         border:1px solid #000;
 619         border-collapse: collapse;
 620 }
 621
 622 .even td {
 623         padding: 4px;
 624         border-bottom:1px solid #000;
 625 }
 626
 627 .odd td {
 628         padding: 4px;
 629         background-color: #def;
 630         border-bottom: 1px solid #000;
 631 }
 632
 633 .addr {
 634         color: #00f;
 635 }
 636
 637 .ram {
 638         border-right:1px solid #000;
 639 }
 640
 641 #output {
 642         position: absolute;
 643         top: 140px;
 644         left: 625px;
 645 }
 646
 647 #docs {
 648         border:1px solid #000;
 649         background-color: #fff;
 650         position: absolute;
 651         top: 10px;
 652         left: 10px;
 653         width: 950px;
 654         height:750px;
 655         visibility: hidden;
 656 }
 657
 658 #docs_top_banner {
 659         color: #000;
 660         background-color: #7cf;
 661         border-bottom:1px solid #000;
 662         position: absolute;
 663         top: 0px;
 664         left: 0px;
 665         height: 45px;
 666         padding-top: 5px;
 667         padding-left: 5px;
 668         width: 945px;
 669 }
 670
 671 #docs_close_btn {
 672         position: absolute;
 673         top: 0px;
 674         right: 0px;
 675         cursor: pointer;
 676         padding: 6px;
 677 }
 678
 679 #docs_mnu_btn {
 680         position: absolute;
 681         top: 0px;
 682         left: 375px;
 683         margin-top: 5px;
 684         padding-left: 20px;
 685         padding-right: 20px;
 686 }
 687
 688 #docs_content {
 689         position: absolute;
 690         top: 55px;
 691         padding: 10px;
 692 }
 693
 694 #docs_link:hover {
 695         background-color: #def;
 696         cursor: pointer;
 697
 698 }
 699
 700 .docs_code_ex {
 701         background-color: #def;
 702         border: 1px solid #ddd;
 703         padding: 5px;
 704 }
 705
 706 .docs_hidden {
 707         visibility: hidden;
 708 }
 709
 710 #instruction {
 711         position: absolute;
 712         top: 335px;
 713         left: 625px;
 714 }
 715
 716 #data {
 717         position: absolute;
 718         top: 385px;
 719         left: 625px;
 720 }
 721
 722 #ascii {
 723         border-collapse: collapse;
 724         border: 1px solid #ddd;
 725 }
 726
 727 #reference {
 728         border-collapse: collapse;
 729         border: 1px solid #ddd;
 730         position: absolute;
 731         top: 430px;
 732         left: 625px;
 733         width: 280px;
 734 }
 735
 736 #ascii {
 737         text-align: center;
 738 }
 739
 740 #val_col {
 741         border-right: 1px solid #ddd;
 742         width: 10px;
 743         padding-right: 15px;
 744 }
 745
 746 #dat_col {
 747         width: 100px;
 748 }
 749
 750 .ref_even td {
 751         border-bottom: 1px solid #ddd;
 752 }
 753
 754 .ref_odd td {
 755         border-bottom: 1px solid #ddd;
 756         background-color: #def;
 757 }
 758
 759 .ref_ins {
 760         font-size: 18px;
 761         font-weight:bold;
 762         color: #00f;
 763 }
 764
 765 </style>
 766 <body onLoad="init_form();">
 767
 768 <center><h2>Turing Tarpit Simulator</h2></center>
 769
 770 <center>
 771 <button onClick='reset();'><img src="http://opentextbook.info/icons/32x32/resultset_first.png" title="Restart" alt="Restart"></button>
 772 &nbsp;&nbsp;
 773 <button onClick='step_back();'><img src="http://opentextbook.info/icons/32x32/resultset_previous.png" title="Step Back" alt="Step Back"></button>
 774 &nbsp;&nbsp;
 775 <button onClick='step_next();'><img src="http://opentextbook.info/icons/32x32/resultset_next.png" title="Next Step" alt="Next Step"></button>
 776 &nbsp;&nbsp;
 777 <button onClick='run();'><img src="http://opentextbook.info/icons/32x32/resultset_last.png" title="Run" alt="Run"></button>
 778 &nbsp;&nbsp;
 779 <button onClick='halt();'><img src="http://opentextbook.info/icons/32x32/cancel.png" title="Halt Execution" alt="Halt Execution"></button>
 780 &nbsp;&nbsp;
 781 <button disabled><img src="http://opentextbook.info/icons/32x32/disk.png" title="Save Code" alt="Save Code"></button>
 782 &nbsp;&nbsp;
 783 <button onClick='display_docs();'><img src="http://opentextbook.info/icons/32x32/book_open.png" title="Open Documentation" alt="Open Documentation"></button>
 784 </center>
 785
 786 <div id="code_buttons">
 787 <button id="dbg_status" onClick='debug_toggle_breakpoints();'  title="Enable/Disable Breakpoints" alt="Enable/Disable Breakpoints">
 788         <img src="http://opentextbook.info/icons/32x32/bug_add.png">
 789 </button>
 790 &nbsp;&nbsp;
 791 <button id="dbg_status" onClick='debug_remove_breakpoints();'  title="Remove Breakpoints" alt="Remove Breakpoints">
 792         <img src="http://opentextbook.info/icons/32x32/bin.png">
 793 </button>
 794 </div>
 795
 796 <div id="input_banner">INPUT</div>
 797 <div id="input"><textarea id="code" rows="27" cols="38"></textarea></div>
 798
 799 <div id="ip_banner">INSTRUCTION POINTER</div>
 800 <div id="instruction"><input onClick="select_all('ins_pointer_disp');" onBlur="ins_point_modify_by_address(disp_ins_pointer.value);" id="ins_pointer_disp" type="text" diabled value=0></div>
 801
 802 <div id="da_banner">DATA POINTER</div>
 803 <div id="data"><input  onClick="select_all('dat_pointer_disp');" onBlur="dat_point_modify_by_address(disp_dat_pointer.value);" id="dat_pointer_disp" type="text" diabled value=0></div>
 804
 805 <div id="ref_banner">INSTRUCTION REFERENCE</div>
 806 <table id="reference">
 807         <tr class="ref_even"><td class="ref_ins">+</td><td>increment byte at data pointer</td></tr>
 808         <tr class="ref_odd" ><td class="ref_ins">-</td><td>decrement byte at data pointer</td></tr>
 809         <tr class="ref_even"><td class="ref_ins">></td><td>increment data pointer</td></tr>
 810         <tr class="ref_odd" ><td class="ref_ins"><</td><td>decrement data pointer</td></tr>
 811         <tr class="ref_even"><td class="ref_ins">.</td><td>print byte at data pointer</td></tr>
 812         <tr class="ref_odd" ><td class="ref_ins">,</td><td>accept one byte of input</td></tr>
 813         <tr class="ref_even"><td class="ref_ins">*</td><td>set breakpoint</td></tr>
 814 </table>
 815
 816 <div id="memory_banner">MEMORY</div>
 817 <div id="ram_disp"></div>
 818 <div id="output_banner">OUTPUT</div>
 819 <div id="output">
 820 <textarea name=code id=output_disp rows="10" cols="38" disabled ></textarea>
 821 </div>
 822 <div id="docs">
 823         <div id="docs_top_banner">
 824                 Turing Tarpit Simulator Documentation&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 825                 <button id="docs_mnu_btn" onClick="docs_select('main');"><img src="http://opentextbook.info/icons/32x32/house.png">Main Menu</button>
 826                 <div id="docs_close_btn" onClick="hide_docs();"><img src="http://opentextbook.info/icons/32x32/cross.png"></div></div>
 827
 828         <div id="docs_content"></div>
 829 </div>
 830
 831 <div id="docs_main" class="docs_hidden">
 832                 <div id="docs_link" onClick="docs_select('basic');"><b>Basic Operation</b></div><br>
 833                 <div id="docs_link" onClick="docs_select('features');"><b>Features and Hints</b></div><br>
 834                 <div id="docs_link" onClick="docs_select('examples');"><b>Example Code 1</b></div><br>
 835                 <div id="docs_link" onClick="docs_select('examples2');"><b>Example Code 2</b></div><br>
 836                 <div id="docs_link" onClick="docs_select('ascii');"><b>ASCII Chart</b></div>
 837 </div>
 838
 839 <div id="docs_basic" class="docs_hidden">
 840
 841 <b>Basic Operation</b>
 842
 843 <p>This Turing Tarpit is an abstract machine or a theoretical model of computer hardware.  The machine has 64 bytes of <b>MEMORY</b> (RAM) and an almost unlimited amount of program storage (ROM). The instruction set is very simple. A user can program the tool by performing one of seven operations:
 844
 845 <p>The <b>'>'</b> and <b>'<'</b> symbols modify the <b>DATA POINTER</b> to point to a new location in the <b>MEMORY</b>. It is possible to set the <b>DATA POINTER</b> to a byte outside the machine's <b>MEMORY</b>. This does not cause an error. If you attempt to modify the <b>MEMORY</b> at this location, the computer will crash and reboot with a <b>SEGFAULT</b> error.
 846
 847 <p>The <b>'+'</b> and <b>'-'</b> symbols allow the user to increment and decrement the <b>MEMORY</b> at the <b>DATA POINTER</b>. Only one byte of <b>MEMORY</b> can be modified at any time. The byte of <b>MEMORY</b> has a minimum and maximum value. When you exceed this value, the byte wraps around to zero.
 848
 849 <p>Another instruction <b>'.'</b> prints the contents of the byte at the <b>DATA POINTER</b>. These numerical values listed in the <b>MEMORY</b> are converted into ASCII and printed as characters in the <b>OUTPUT</b>. A small chart of common ASCII values can be found in this documentation.
 850
 851 <p>The computer can interactively request data from the user with the <b>','</b> instruction. This opens up a dialog to request one byte of data from the user.
 852
 853 <p>An additional instruction <b>'*'</b> halts the execution of the program to allow the user to examine the machine at that point.  This is known as a <b>BREAKPOINT</b>. These breakpoints can be toggled on and off as well as automatically deleted from the code with the user interface below the <b>INPUT</b>.
 854
 855 <p>You can execute the program one step at a time or run the program at full speed until it needs user input or halts. Both methods are useful during development.
 856
 857 <p>More documentation is included in this manual. One section is dedicated to Features and Hints that will aid you in getting the most of this tool.  Another section is devoted to working code examples that provide a tutorial on how to best make use of the language.
 858
 859 </div>
 860
 861 <div id="docs_features" class="docs_hidden">
 862
 863 <b>Features and Hints</b>
 864
 865 <p>All characters outside the Instruction Set are considered comments and will be skipped over during runtime.
 866
 867 <p>While program executes, the <b>INPUT</b> cursor is moved over the current instruction.
 868
 869 <p>User can change the address of the <b>DATA POINTER</b> and Instruction Pointer at any time.
 870 <b>MEMORY</b> and pointers that have been modified are highlighted in yellow until the next step.
 871
 872 <p>The <b>DATA POINTER</b> can point to any location. If you de-reference a pointer out of <b>MEMORY</b> range, a <b>SEGFAULT</b> error will occur. This causes the computer to reboot without warning.
 873
 874 <p>The Instruction Pointer can point to a location range of 1 to the number of characters in the <b>INPUT</b>.
 875
 876 <p>Restarting the machine will reset all <b>MEMORY</b>, Data and Instruction Pointers to zero.
 877
 878 <p>The <b>OUTPUT</b> of the program cannot be edited.
 879
 880 <p>A user can add a break instruction in the code using an asterisk <b>'*'</b>. This will cause the machine to pause when in Run Mode. Breaks can be disabled and enabled with the debug button, and can be permanently deleted with the delete button.
 881
 882 <p>In this version the programs you type in are not saved to your computer.  This must be done as a manual operation.
 883
 884 <p>As this program is reliant on the speed and efficiency of your browser's JavaScript implementation some computers will be able to execute programs faster than others.
 885
 886 <p>This program is completely self contained in one HTML document.  You are free do use it how you wish, subject to the terms and conditions of the GNU GPL license (version 3).
 887
 888 <p>Although it has not been tested in all browsers, it should work well under most any modern web browser that supports Dynamic HTML and JavaScript.  You must have JavaScript enabled for this application to work properly.
 889
 890 <p>No server interaction or outside service is needed for this program to operate.
 891 </div>
 892
 893
 894
 895
 896
 897 <div id="docs_examples" class="docs_hidden">
 898 These are some examples of programs and snippets to get you started. Click the "Load" button to apply these to the <b>INPUT</b> of the simulator. (Please Note: You will erase the current program stored there.) Many of these examples can be found at Wikipedia.
 899
 900 <p><button id="docs_try" onClick="docs_try('docs_example_clear_btye');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Clear Byte:</b>
 901 Sets value at current <b>DATA POINTER</b> to Zero.
 902 <div class=docs_code_ex>
 903 [-]
 904 </div>
 905 <p><button id="docs_try" onClick="docs_try('docs_example_clear_prev');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Clear Previous Cells:</b>
 906 Sets value of all previous bytes including current byte to Zero.
 907 <div class=docs_code_ex>
 908 [[-]<]
 909 </div>
 910 <p><button id="docs_try" onClick="docs_try('docs_example_rewind');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Rewind:</b>
 911 Goes back to byte Zero.
 912 <div class=docs_code_ex>
 913 [<]>
 914 </div>
 915 <p><button id="docs_try" onClick="docs_try('docs_example_fastforward');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Fast-forward:</b>
 916 Increments the <b>DATA POINTER</b> until a 0 is found then decrements it until the current byte is non-zero.
 917 <div class=docs_code_ex>
 918 [>]<
 919 </div>
 920 <p><button id="docs_try" onClick="docs_try('docs_example_cat');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Simple Loop:</b>
 921 Accepts input from the user and echos it to the screen, similar to the UNIX cat program.
 922 <div class=docs_code_ex>
 923 ,[.,]
 924 </div>
 925 <p><button id="docs_try" onClick="docs_try('docs_example_data_save');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Moving the <b>DATA POINTER</b>:</b>
 926 Accepts input from the user and saves all input in the memory for future use.
 927 <div class=docs_code_ex>
 928 >,[.>,]
 929 </div>
 930 </div>
 931
 932
 933
 934
 935
 936 <div id="docs_examples2" class="docs_hidden">
 937 <p><button id="docs_try" onClick="docs_try('docs_example_add');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Add Two Bytes:</b>
 938 Adds current location to the next location and leaves behind a Zero for the first value.
 939 <div class=docs_code_ex>
 940 [->+<]
 941 </div>
 942 <p><button id="docs_try" onClick="docs_try('docs_example_uc');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Lower To Upper:</b>
 943 Accepts lower case input from the user and makes it uppercase. Stops when user clicks Cancel.
 944 <div class=docs_code_ex>
 945 ,----------[----------------------.,----------]
 946 </div>
 947 <p><button id="docs_try" onClick="docs_try('docs_example_copy_byte');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Copy Value:</b>
 948 Copy value of byte Zero to byte One.
 949 <div class=docs_code_ex>
 950 >[-]>[-]<<[->+>+<<]>>[-<<+>>]<<
 951 </div>
 952 <p><button id="docs_try" onClick="docs_try('docs_example_seek');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Seek:</b>
 953 Move <b>DATA POINTER</b> forward until it lands on a byte with a value of 1, preserving all bytes it passes.
 954 <div class=docs_code_ex>
 955 -[+>-]+
 956 </div>
 957 <p><button id="docs_try" onClick="docs_try('docs_example_add_two');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Single Digit Add:</b>
 958 Adds two single digit numbers and display result. Works on one-digit results only.
 959 <div class=docs_code_ex>
 960 ,>++++++[<-------->-],[<+>-]<.
 961 </div>
 962 <p><button id="docs_try" onClick="docs_try('docs_example_multiply');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Single Digit Multiplication:</b>
 963 Multiply two single digit numbers and display result. Works on one-digit results only.
 964 <div class=docs_code_ex>
 965  ,>,>++++++++[<------<------>>-]
 966  <<[>[>+>+<<-]>>[<<+>>-]<<<-]
 967  >>>++++++[<++++++++>-]<.>.
 968 </div>
 969 <p><button id="docs_try" onClick="docs_try('docs_example_divide');"><img src="http://opentextbook.info/icons/16x16/bricks.png">Try</button><b>Single Digit Division:</b>
 970 Accepts two single-digit numbers from the user, divides them and displays the truncated quotient. Dividend is stored in byte Zero and Divisor is stored in byte One.
 971 <div class=docs_code_ex>
 972 ,>,>++++++[-<--------<-------->>]<<[>[->+>+<<]>[-<<-[>]>>>[<[>>>-<<<[-]]>>]<<]>>>+<<[-<<+>>]<<<]>[-]>>>>[-<<<<<+>>>>>]<<<<++++++[-<++++++++>]<.
 973 </div>
 974 </div>
 975
 976
 977
 978
 979
 980 <div id="docs_example_clear_btye" class="docs_hidden">
 981
 982 This is an example of clearing a byte
 983
 984 Update first byte to higher number and break
 985
 986 ++++++*
 987
 988 Set this byte to zero regardless of current value
 989
 990 [-]*
 991
 992 Notice the Memory 0 location is now set to Zero
 993 </div>
 994
 995
 996
 997
 998
 999 <div id="docs_example_clear_prev" class="docs_hidden">
1000
1001 This example clears the current and all previous bytes to Zero
1002
1003 Set a few bytes to Non Zero values
1004
1005 >+++++
1006 >+++++
1007 >+
1008 >++++
1009 >++++++*
1010
1011 Set all bytes from current back to Zero
1012
1013 [[-]<]*
1014 </div>
1015
1016
1017
1018 <div id="docs_example_rewind" class="docs_hidden">
1019
1020 Often you need to return the Data Pointer to Zero
1021
1022 Set a few bytes to Non Zero values and Move Data Pointer
1023
1024 >+++++
1025 >+++++
1026 >+
1027 >++++
1028 >++++++*
1029
1030 Find Data Pointer Zero
1031
1032 [<]*
1033 </div>
1034
1035
1036
1037 <div id="docs_example_fastforward" class="docs_hidden">
1038
1039 Increments the Data Pointer until a 0 is found then decrements if until the current cell is non-zero
1040
1041 Set a few bytes to Non Zero values and Move Data Pointer
1042
1043 >+++++
1044 >+++++
1045 >+
1046 >++++
1047 >++++++*
1048
1049 Move Data Pointer back to Zero
1050
1051 <<<<*
1052
1053 [>]<*
1054 </div>
1055
1056 <div id="docs_example_cat" class="docs_hidden">
1057
1058 Accepts input from the user and echos it to the screen
1059
1060 Click "Cancel" to Exit Program
1061
1062 ,[.,]
1063 </div>
1064
1065 <div id="docs_example_data_save" class="docs_hidden">
1066
1067 Accepts input from the user and saves in memory for future use
1068
1069 >,[.>,]
1070 </div>
1071
1072 <div id="docs_example_add" class="docs_hidden">
1073 Adds current location to the next location and leaves behind a Zero for the first value
1074
1075 Two
1076
1077 ++*
1078
1079 Plus Two
1080
1081 >++*
1082
1083 Move Data Pointer to first value
1084
1085 <*
1086
1087 Equals Four
1088
1089 [->+<]*
1090 </div>
1091
1092
1093 <div id="docs_example_uc" class="docs_hidden">
1094
1095 Accepts lower case input from the user and makes it uppercase
1096
1097  Stops when user clicks Cancel
1098
1099 ,----------[----------------------.,----------]
1100 </div>
1101
1102 <div id="docs_example_copy_byte" class="docs_hidden">
1103
1104 Set byte Zero
1105
1106 +++*
1107
1108 Set byte One
1109
1110 >++*
1111
1112 Move back to byte Zero
1113
1114 <*
1115
1116 Copy value of byte Zero to byte One
1117
1118 >[-]>[-]<<[->+>+<<]>>[-<<+>>]<<*
1119 </div>
1120
1121
1122 <div id="docs_example_seek" class="docs_hidden">
1123
1124 Set a few bytes to Non Zero values and Move Data Pointer
1125
1126 ++
1127 >+++++
1128 >+++++
1129 >+
1130 >++++
1131 >++++++*
1132
1133 Move DATA POINTER back to byte Zero
1134
1135 <<<<<*
1136
1137 Move DATA POINTER forward until it lands on a byte with a value of 1 preserving all bytes it passes
1138
1139 -[+>-]+*
1140 </div>
1141
1142
1143 <div id="docs_example_add_two" class="docs_hidden">
1144
1145 Adds two single digit numbers and display result
1146
1147 Works on one digit results only
1148
1149 ,>++++++[<-------->-],[<+>-]<.
1150
1151 </div>
1152
1153
1154 <div id="docs_example_multiply" class="docs_hidden">
1155
1156 Multiply two single digit numbers and display result
1157
1158 Works on one digit results only
1159
1160  ,>,>++++++++[<------<------>>-]
1161  <<[>[>+>+<<-]>>[<<+>>-]<<<-]
1162  >>>++++++[<++++++++>-]<.>.*
1163 </div>
1164
1165 <div id="docs_example_divide" class="docs_hidden">
1166
1167 Accepts two single digit numbers from the user divides them and displays the truncated quotient
1168
1169 Dividend is stored in byte Zero and Divisor is stored in byte One
1170
1171 ,>,>++++++[-<--------<-------->>]<<[>[->+>+<<]>[-<<-[>]>>>[<[>>>-<<<[-]]>>]<<]>>>+<<[-<<+>>]<<<]>[-]>>>>[-<<<<<+>>>>>]<<<<++++++[-<++++++++>]<.*
1172 </div>
1173
1174 <div id="example_0" class="docs_hidden">
1175 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>>>+++.---<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>>---.+++<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>-.+<<<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>----.++++<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>++.--<<<<<<<<<<<<<>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>.<<<<.
1176 </div>
1177
1178 <div id="example_1" class="docs_hidden">
1179 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>>>----.++++<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>>>>>>>>>>>----.++++<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>--.++<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<.
1180 </div>
1181
1182 <div id="example_2" class="docs_hidden">
1183 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>+.-<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>+.-<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>++.--<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>>.<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<.
1184 </div>
1185
1186 <div id="example_3" class="docs_hidden">
1187 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>>>>----.++++<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>+++.---<<<<<<<<>>>>>>>>>>-.+<<<<<<<<<<>>>>>>>>++.--<<<<<<<<>>>>>>>>>>-.+<<<<<<<<<<>>>>>>>>>>----.++++<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>+++.---<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>>---.+++<<<<<<<<<>>>>>>--.++<<<<<<>>>>>>>>>>>-.+<<<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>----.++++<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>++.--<<<<<<<<<<<<<>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>.<<<<.
1188 </div>
1189
1190 <div id="example_4" class="docs_hidden">
1191 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>>--.++<<<<<<<<<>>>>>>>>>>-.+<<<<<<<<<<>>>>>>>>>>++.--<<<<<<<<<<>>>>>>>>>>>----.++++<<<<<<<<<<<>>>>>>>>>>++.--<<<<<<<<<<>>>>>>>>+.-<<<<<<<<>>>>>>>>>>--.++<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>>>----.++++<<<<<<>>>>.<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>----.++++<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>+.-<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>++.--<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>>.<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<.
1192 </div>
1193
1194 <div id="example_5" class="docs_hidden">
1195 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>>-.+<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>>>>----.++++<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>+++.---<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>-.+<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<.
1196 </div>
1197
1198 <div id="example_6" class="docs_hidden">
1199 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>>>>----.++++<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>>+++.---<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>>>----.++++<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>----.++++<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<.
1200 </div>
1201
1202 <div id="example_7" class="docs_hidden">
1203 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>+++.---<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>>>----.++++<<<<<<>>>>.<<<<>>>>>>>>>>>>>--.++<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>----.++++<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>>----.++++<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>---.+++<<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>>++.--<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<.
1204 </div>
1205
1206
1207 <div id="example_8" class="docs_hidden">
1208 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>+++.---<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>>.<<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>>.<<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>>---.+++<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>++.--<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>.<<<<.
1209 </div>
1210
1211
1212 <div id="example_9" class="docs_hidden">
1213 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>>----.++++<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>-.+<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>-.+<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>>>----.++++<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>>>>---.+++<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<.
1214 </div>
1215
1216 <div id="example_10" class="docs_hidden">
1217 ++++++++[>+>++>+++>++++>+++++>++++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++>+++++++++++++>++++++++++++++>+++++++++++++++>++++++++++++++++<<<<<<<<<<<<<<<<-]>>>>>>>>+++.---<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>+++.---<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>.<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>--.++<<<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<>>>>>>>>>>>>>>>+.-<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>>>>>>>>>++.--<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>.<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>+++.---<<<<<<<<<<<<>>>>>>>>>>>>>>-.+<<<<<<<<<<<<<<>>>>>>>>>>>>>>.<<<<<<<<<<<<<<>>>>>>>>>>>>>---.+++<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>--.++<<<<<<>++.--<>++.--<>>>>>>>>>---.+++<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>>>-.+<<<<<<<<<<<>>>>>>--.++<<<<<<>>>>.<<<<>>>>>>>>>----.++++<<<<<<<<<>>>>>>>>>>>>>+.-<<<<<<<<<<<<<>>>>>>>>>>>>>++.--<<<<<<<<<<<<<>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<>>>>>>>>>>>>>>+++.---<<<<<<<<<<<<<<>>>>>>>>>>>>>>>----.++++<<<<<<<<<<<<<<<>>>>>>>>>>>>>>++.--<<<<<<<<<<<<<<>>>>>>>>>>>>+.-<<<<<<<<<<<<>>>>.<<<<.
1218 </div>
1219
1220 <div id="docs_ascii" class="docs_hidden">
1221
1222 <table id="ascii">
1223 <caption><b>ASCII Chart</b></caption>
1224
1225 <tr class="ref_even">
1226         <td id="dat_col">0</td>
1227         <td class="ctrl" id="val_col">NUL</td>
1228         <td id="dat_col">16</td>
1229         <td class="ctrl" id="val_col">DLE</td>
1230         <td id="dat_col">32</td>
1231         <td class="ctrl" id="val_col">SP</td>
1232         <td id="dat_col">48</td>
1233         <td id="val_col">0</td>
1234         <td id="dat_col">64</td>
1235         <td id="val_col">@</td>
1236         <td id="dat_col">80</td>
1237         <td id="val_col">P</td>
1238         <td id="dat_col">96</td>
1239         <td id="val_col">`</td>
1240         <td id="dat_col">112</td>
1241         <td>p</td>
1242 </tr>
1243
1244 <tr class="ref_odd">
1245         <td>1</td>
1246         <td class="ctrl" id="val_col">SOH</td>
1247         <td>17</td>
1248         <td class="ctrl" id="val_col">DC1</td>
1249         <td>33</td>
1250         <td id="val_col">!</td>
1251         <td>49</td>
1252         <td id="val_col">1</td>
1253         <td>65</td>
1254         <td id="val_col">A</td>
1255         <td>81</td>
1256         <td id="val_col">Q</td>
1257         <td>97</td>
1258         <td id="val_col">a</td>
1259         <td>113</td>
1260         <td>q</td>
1261 </tr>
1262
1263 <tr class="ref_even">
1264         <td>2</td>
1265         <td class="ctrl" id="val_col">STX</td>
1266         <td>18</td>
1267         <td class="ctrl" id="val_col">DC2</td>
1268         <td>34</td>
1269         <td id="val_col">"</td>
1270         <td>50</td>
1271         <td id="val_col">2</td>
1272         <td>66</td>
1273         <td id="val_col">B</td>
1274         <td>82</td>
1275         <td id="val_col">R</td>
1276         <td>98</td>
1277         <td id="val_col">b</td>
1278         <td>114</td>
1279         <td>r</td>
1280 </tr>
1281
1282 <tr class="ref_odd">
1283         <td>3</td>
1284         <td class="ctrl" id="val_col">ETX</td>
1285         <td>19</td>
1286         <td class="ctrl" id="val_col">DC3</td>
1287         <td>35</td>
1288         <td id="val_col">#</td>
1289         <td>51</td>
1290         <td id="val_col">3</td>
1291         <td>67</td>
1292         <td id="val_col">C</td>
1293         <td>83</td>
1294         <td id="val_col">S</td>
1295         <td>99</td>
1296         <td id="val_col">c</td>
1297         <td>115</td>
1298         <td>s</td>
1299 </tr>
1300
1301 <tr class="ref_even">
1302         <td>4</td>
1303         <td class="ctrl" id="val_col">EOT</td>
1304         <td>20</td>
1305         <td class="ctrl" id="val_col">DC4</td>
1306         <td>36</td>
1307         <td id="val_col">$</td>
1308         <td>52</td>
1309         <td id="val_col">4</td>
1310         <td>68</td>
1311         <td id="val_col">D</td>
1312         <td>84</td>
1313         <td id="val_col">T</td>
1314         <td>100</td>
1315         <td id="val_col">d</td>
1316         <td>116</td>
1317         <td>t</td>
1318 </tr>
1319
1320 <tr class="ref_odd">
1321         <td>5</td>
1322         <td class="ctrl" id="val_col">ENQ</td>
1323         <td>21</td>
1324         <td class="ctrl" id="val_col">NAK</td>
1325         <td>37</td>
1326         <td id="val_col">%</td>
1327         <td>53</td>
1328         <td id="val_col">5</td>
1329         <td>69</td>
1330         <td id="val_col">E</td>
1331         <td>85</td>
1332         <td id="val_col">U</td>
1333         <td>101</td>
1334         <td id="val_col">e</td>
1335         <td>117</td>
1336         <td>u</td>
1337 </tr>
1338
1339 <tr class="ref_even">
1340         <td>6</td>
1341         <td class="ctrl" id="val_col">ACK</td>
1342         <td>22</td><td class="ctrl" id="val_col">SYN</td>
1343         <td>38</td>
1344         <td id="val_col">&amp;</td>
1345         <td>54</td>
1346         <td id="val_col">6</td>
1347         <td>70</td>
1348         <td id="val_col">F</td>
1349         <td>86</td>
1350         <td id="val_col">V</td>
1351         <td>102</td>
1352         <td id="val_col">f</td>
1353         <td>118</td>
1354         <td>v</td>
1355 </tr>
1356
1357 <tr class="ref_odd">
1358         <td>7</td>
1359         <td class="ctrl" id="val_col">BEL</td>
1360         <td>23</td>
1361         <td class="ctrl" id="val_col">ETB</td>
1362         <td>39</td>
1363         <td id="val_col">'</td>
1364         <td>55</td>
1365         <td id="val_col">7</td>
1366         <td>71</td>
1367         <td id="val_col">G</td>
1368         <td>87</td>
1369         <td id="val_col">W</td>
1370         <td>103</td>
1371         <td id="val_col">g</td>
1372         <td>119</td>
1373         <td>w</td>
1374 </tr>
1375
1376 <tr class="ref_even">
1377         <td>8</td>
1378         <td class="ctrl" id="val_col">BS</td>
1379         <td>24</td>
1380         <td class="ctrl" id="val_col">CAN</td>
1381         <td>40</td>
1382         <td id="val_col">(</td>
1383         <td>56</td>
1384         <td id="val_col">8</td>
1385         <td>72</td>
1386         <td id="val_col">H</td>
1387         <td>88</td>
1388         <td id="val_col">X</td>
1389         <td>104</td>
1390         <td id="val_col">h</td>
1391         <td>120</td>
1392         <td>x</td>
1393 </tr>
1394
1395 <tr class="ref_odd">
1396         <td>9</td>
1397         <td class="ctrl" id="val_col">HT</td>
1398         <td>25</td>
1399         <td class="ctrl" id="val_col">EM</td>
1400         <td>41</td>
1401         <td id="val_col">)</td>
1402         <td>57</td>
1403         <td id="val_col">9</td>
1404         <td>73</td>
1405         <td id="val_col">I</td>
1406         <td>89</td>
1407         <td id="val_col">Y</td>
1408         <td>105</td>
1409         <td id="val_col">i</td>
1410         <td>121</td>
1411         <td>y</td>
1412 </tr>
1413
1414 <tr class="ref_even">
1415         <td>10</td>
1416         <td class="ctrl" id="val_col">LF</td>
1417         <td>26</td>
1418         <td class="ctrl" id="val_col">SUB</td>
1419         <td>42</td>
1420         <td id="val_col">*</td>
1421         <td>58</td>
1422         <td id="val_col">:</td>
1423         <td>74</td>
1424         <td id="val_col">J</td>
1425         <td>90</td>
1426         <td id="val_col">Z</td>
1427         <td>106</td>
1428         <td id="val_col">j</td>
1429         <td>122</td>
1430         <td>z</td>
1431 </tr>
1432
1433 <tr class="ref_odd">
1434         <td>11</td>
1435         <td class="ctrl" id="val_col">VT</td>
1436         <td>27</td>
1437         <td class="ctrl" id="val_col">ESC</td>
1438         <td>43</td>
1439         <td id="val_col">+</td>
1440         <td>59</td>
1441         <td id="val_col">;</td>
1442         <td>75</td>
1443         <td id="val_col">K</td>
1444         <td>91</td>
1445         <td id="val_col">[</td>
1446         <td>107</td>
1447         <td id="val_col">k</td>
1448         <td>123</td>
1449         <td>{</td>
1450 </tr>
1451
1452 <tr class="ref_even">
1453         <td>12</td>
1454         <td class="ctrl" id="val_col">FF</td>
1455         <td>28</td>
1456         <td class="ctrl" id="val_col">FS</td>
1457         <td>44</td>
1458         <td id="val_col">,</td>
1459         <td>60</td>
1460         <td id="val_col">&lt;</td>
1461         <td>76</td>
1462         <td id="val_col">L</td>
1463         <td>92</td>
1464         <td id="val_col">\</td>
1465         <td>108</td>
1466         <td id="val_col">l</td>
1467         <td>124</td>
1468         <td>|</td>
1469 </tr>
1470
1471 <tr class="ref_odd">
1472         <td>13</td>
1473         <td class="ctrl" id="val_col">CR</td>
1474         <td>29</td>
1475         <td class="ctrl" id="val_col">GS</td>
1476         <td>45</td>
1477         <td id="val_col">-</td>
1478         <td>61</td>
1479         <td id="val_col">=</td>
1480         <td>77</td>
1481         <td id="val_col">M</td>
1482         <td>93</td>
1483         <td id="val_col">]</td>
1484         <td>109</td>
1485         <td id="val_col">m</td>
1486         <td>125</td>
1487         <td>}</td>
1488 </tr>
1489
1490 <tr class="ref_even">
1491         <td>14</td>
1492         <td class="ctrl" id="val_col">SO</td>
1493         <td>30</td>
1494         <td class="ctrl" id="val_col">RS</td>
1495         <td>46</td>
1496         <td id="val_col">.</td>
1497         <td>62</td>
1498         <td id="val_col">></td>
1499         <td>78</td>
1500         <td id="val_col">N</td>
1501         <td>94</td>
1502         <td id="val_col">^</td>
1503         <td>110</td>
1504         <td id="val_col">n</td>
1505         <td>126</td>
1506         <td>~</td>
1507 </tr>
1508
1509 <tr class="ref_odd">
1510         <td>15</td>
1511         <td class="ctrl" id="val_col">SI</td>
1512         <td>31</td>
1513         <td class="ctrl" id="val_col">US</td>
1514         <td>47</td>
1515         <td id="val_col">/</td>
1516         <td>63</td>
1517         <td id="val_col">?</td>
1518         <td>79</td>
1519         <td id="val_col">O</td>
1520         <td>95</td>
1521         <td id="val_col">_</td>
1522         <td>111</td>
1523         <td id="val_col">o</td>
1524         <td>127</td>
1525         <td class="ctrl">DEL</td>
1526 </tr>
1527 </table>
1528 </div>
1529
1530 </body>
1531 </html>
1532