Directives
DEFTTY 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 MNEMONIC Define File Command Sequence.
 
Examples 0010 DEFTTY (LFO)80,25