PROOFW-ACTIVE+NOS : FLAGPROOFW-ACTIVE+NOS is a flag or parameter.
If T, active lines of the current proof are printed in the
Current Subproof & Line Numbers window, if this window exists.
PROOFW-ACTIVE+NOS takes values of type BOOLEAN.
It belongs to subjects PRINTING OTL-VARS .
Its default value is T
Its current value is T.
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