John,
I guess you did see the tinySA wiki
W.r.t the console commands I agree single letter commands are not easy to understand.
Can I propose some changes?
Sweep Settings:
FOCUS->ZEROSPAN (zerospan is the regular technical term for this type of measurement)
Display Options:
GRID REF->REF (one word)
GRID SCALE->SCALE (one word)
Debugging and Troubleshooting Commands:
REGISTER->REG (less letters to retype if you are doing register level debugging)
REF_FREQ->CAL (is is actually more a power level calibration output)