On 05/24/2014 05:00 PM, Cory Smelosky wrote: No, IND is not picky about tabs, but why didn't you just add the line to SGNPREFIX as I suggested instead? I must have missed you mentioning putting it in SGNPREFIX. I was reading rather quickly. *grumble* AT.T0 -- Undefined symbol $I$CBP .IFT $I$CBP .AND .IFT $K$DAS .DATA #0 SET /PLCTL=ICB:600.:200.:51. How many symbols need I manually define?! :P Calm down, Cory. You've gotten farther with RSX in a few days than I did in probably six months when I got my first PDP-11 in the 80s, and I had a full (paper) manual set. You are doing friggin' FANTASTIC. Seriously. -Dave -- Dave McGuire, AK4HZ New Kensington, PA