ttytype \- tty type database
is a file which map teletypes to their types.
A line in the file is devoted to each teletype.
The first character of each line gives the teletype letter
This is followed by a two character code giving the teletype type.
The teletype types are mapped to their capabilities by the data base
The format also allows descriptive information to be placed at the end
of the file following a completely empty line.
ttycap (V), ttytype (VI), typeof (VII)