PRIMITIVEPname
PRIMITIVE?name
Outputs TRUE if the input is the name of a primitive (one that is built into FMSLogo), outputs FALSE otherwise. Note that many of FMSLogo's procedures are library procedures, not primitives.
name
must be a word.
TO FWD :arg FORWARD :arg END SHOW PRIMITIVEP "FWD
falseSHOW PRIMITIVEP "FORWARD
true