TTYConstants.Mesa
Copyright (C) Xerox Corporation 1982, 1986. All rights reserved.
Tim Diebert: December 8, 1986 2:32:30 pm PST
aborted: BYTE = 0;
notAborted: BYTE = 1;
normal: TTYStream.SubSequenceType = 0;
setBackingSize: TTYStream.SubSequenceType = 1;
removeChars: TTYStream.SubSequenceType = 2;
blinkDisplay: TTYStream.SubSequenceType = 3;
deleteBackingFile: TTYStream.SubSequenceType = 4;