VTTEST, UTILITIES, VT100/VT220 Terminal/emulator test program VTTEST tests the compatibility (or demonstrates the non-compatibility) of so-called "VT100-compatible" terminals. This is a new version using a configure script, in ANSI C, with tests for ISO 6429 color, VT220, VT420, and xterm extensions. VTTEST has been tested on several UNIX platforms as well as VAX/VMS.