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Trailing-Edge - PDP-10 Archives - BB-PBQUC-BM_1990 - help/ctrll.hlp
There are no other files named ctrll.hlp in the archive.
CTRL/L

Advances the paper on a hard-copy terminal to  the  top  of  the  next
page.   To  stop  the  ^L from printing, give the TERMINAL NO INDICATE
command.