Thank you Jerry Murphy,
I had tried every key on my ASR in LTRS and in FIGS but neither 28 nor 29 would operate. I see the reason now. My ASR does not have a BLANK key.
A KSR I am still working on does, so I took the paper out of the ASR, pulled the KSR close enough to watch the ASR stuntbox. and, sure enough, FIGS-Blank operated function pawl 28, then an H operated 29.
I do not have the relays for motor control. I use an Idle Line Motor control anyway. Someday I may use FIGS-BLANK-H to operate something externally.
I thank you again.
Tom N3CRK