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42 .Nd terminal capability interface
51 command makes terminal-dependent information available to users or shell
52 applications. When invoked as the
54 utility, the screen will be cleared as if
62 The terminal name as specified in the
64 database, for example,
72 variable from the environment.
77 command outputs a string if the
79 is of type string; a number if it is of type integer.
82 exits 0 if the terminal has the capability and 1 if it does not,
83 without further action.
87 is of type string, and takes arguments (e.g. cursor movement,
90 sequence) the arguments are taken from the command line immediately
91 following the attribute.
93 The following special attributes are available:
101 Initialize the terminal (the
106 Print the descriptive name of the user's terminal type.
108 Reset the terminal (the
116 is based on the last attribute specified.
117 If the attribute is of type string or of type integer,
119 exits 0 if the attribute is defined for this terminal type and 1
121 If the attribute is of type boolean,
123 exits 0 if the terminal has this attribute, and 1 if it does not.
126 command exits 2 if any error occurred.
138 command can't really distinguish between different types of attributes.
140 Some termcap entries depend upon having a
142 in them that is just a
144 and nothing more. Right now we just warn about them if they don't
145 have a valid type declaration. These warnings are sent to