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DEFTTY Directive
Define Terminal Size
Format
DEFTTY [(chan)]col,ln
Where:
chan
Channel or logical file number of the file to define as a terminal.
col
Default maximum number of columns for the terminal. This must be an
integer value, range 0 to 255.
ln
Default maximum number of lines for the terminal. This must be an integer
value, range 0 to 255.
Note: The number of lines has an additional limit based on a maximum of 20000
characters per window (i.e., the maximum number of lines is 20000/col ).
Description
Use the DEFTTY directive to designate that the logical file number refers to a
terminal. You can specify the default maximum lines and columns supported by the
terminal. If you do not designate the file as a terminal, Windows and other
mnemonics will not be supported.
See Also
Examples
0010 DEFTTY (LFO)80,25