VT100 FILES chkesc.* is a program to check a terminal or emulator's response to various report requests. *.vt are VT100 demos, to be typed or cat'd to a VT100 or emulator screen. The rest of the files are for vttest, a VT100 emulator tester. Note: The term VT100 is used loosely here, really applying to VT100, VT101, VT102, V220, VT320, etc.