SUBSTRINGP thing1 thing2
SUBSTRING? thing1 thing2
if "thing1" or "thing2" is a list or an array, outputs FALSE. If
"thing2" is a word, outputs TRUE if "thing1" is EQUALP to a
substring of "thing2", FALSE otherwise.
SUBSTRINGP thing1 thing2
SUBSTRING? thing1 thing2
if "thing1" or "thing2" is a list or an array, outputs FALSE. If
"thing2" is a word, outputs TRUE if "thing1" is EQUALP to a
substring of "thing2", FALSE otherwise.