Thanks mister e. You got me thinking.
Your right. The red "\ " doesn't mean anything. It works!
My problem I found was that my Serout2 line was incorrect.
from the start.

Instead of:
Serout2 SOUT,1,[REP "Z"\4,CRG,LF]

Serout2 SOUT,813,[REP"Z"\4,CRG,LF] WORKS FINE!

I'm new to Serout2 use so rewriting the baud rate to 813 got all my Serout2 lines to work. And of course the REP function works now.

I've go to stop those late late night programming sessions.