"Termcap" is short for "terminal capability", and is the name of a database which applications can use to do full-screen output on any kind of terminal. The termcap database contains records for the various supported terminals, each of which contains fields of the form

Cap is a two-letter code that represents a cursor movement, screen mode change (such as inverse or underline mode), and various other things. Value is usually a sequence of control characters that is sent to a terminal to initiate the desired action. Value can also be 'boolean', or yes/no, values, for such things as "Does this terminal support cursor movement?". The termcap file is documented in termcap(5) manual page.

The termcap library does not specifically require GNO/ME.

The following terminal types are supported in the GNO/ME termcap file:

gnoconGNO Console
CONSOLEGS/OS .console driver
ptseProterm Special Emulation
vt100DEC VT-100 terminal
xerox820Xerox 820-II CP/M terminal
iw1Apple ImageWriter I printer
iw-altAlternate ImageWriter I printer
deskjetHewlett Packard DeskJet 500 printer

The printer entries allow a formatted electronic manual page to be sent to the printer. For example, the following script would bring up the manual page for ls, format it for the DeskJet 500, and print it with italics and boldface:

set temp=$term
set term=deskjet
man $1 > .ttyb
set term=$temp