Usage:
/SHIFT [n]
Shifts the positional parameters left by n. That is, the positional parameters %(n+1) ... %# are renamed to %1 ... %(#-n). If n is omitted, 1 is assumed.
/shift is useful only during macro expansion.
Example:
/def worlds = /while ({#}) /world %1%; /shift%; /done
Then, the command "/worlds foo
bar baz" would execute the commands
"/world foo",
"/world bar", and
"/world baz".
See: variables, evaluation, list commands