DZWRNOPAREN, $ZWRTACxxx is not allowed inside a parenthesized SET target
Compile Time Error: This indicates the argument for a SET command attempted to assign a $ZWRTAC* pseudo-variable within a parenthesized list of left-hand arguments.
Action: Correct the code in question - the $ZWRTAC* is only useful in restoring context from ZSHOW or ZWRITE output and has very narrow capabilities.