I think I have uncovered a problem with the popup menu in Jmol 11.3.2 as exemplified http://chemapps.stolaf.edu/jmol/docs/examples-11/new.htm
Issuing the commands from the popup menu leads to errors in console e.g. Set X rate 10
script ERROR: unrecognized SPIN = parameter: X
set spin >> X << 10
I think it should just be lower case X,Y,X etc.
set spin x 10 works OK.