turing_tarpit.html

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