captoinfo looks in filename for termcap descriptions. For each one found, an equivalent terminfo description is
written to standard output, along with any comments found. A description which is expressed as relative to another description (as specified in the termcap tc = field)
is reduced to the minimum superset before being displayed.
If no filename is given, then the environment variable TERMCAP is used for the filename or entry. If TERMCAP is a full pathname to a file, only the terminal whose name is specified in the environment variable TERM is extracted from that file. If the environment variable TERMCAP is not set, then the file /usr/share/lib/termcap is read.
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