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The '''LINESIZE.HEL''' is the HELp documentation for the '''LINESIZE.REX''' (REXX) program.
╔══════════════════════════════════════════════════════════════════════╗ ║ REXX function to return the screen width (linesize) as a REXX result.║ ║ ║ ║ The Environment variable COLUMNS is examined, and if present, ║ ║ its value is extracted and returned. ║ ║ ║ ║ If the EnvVar variable isn't defined, the DOS command MODE CON ║ ║ is issued and it's output is filtered (with FIND) and written to ║ ║ a temporary file, and is scanned for the line: Columns [:=] nn ║ ║ ║ ║ If the value isn't available or invalid, a value of zero is returned.║ ║ ║ ║ If program is running under PC/REXX, CMS, or R3, this routine ║ ║ should never be invoked as those REXXes have their own built─in ║ ║ function LINESIZE. ║ ║ ║ ║ This program shouldn't be "compiled" with PC/REXX with the /L opt. ║ ╚══════════════════════════════════════════════════════════════════════╝ Ω
[[Category:REXX library routines]]