Outputs TRUE if
word1 comes before
word2 in ASCII collating sequence (for words of letters, in alphabetical order).
Case-sensitivity is determined by the value of CASEIGNOREDP.
Note that if the inputs are numbers, the result may not be the same as with LESSP.
BEFOREP 3 12 is FALSE because 3 collates before 1.
SHOW BEFOREP "ABC "abdtrue
SHOW BEFOREP "abd "ABCfalse
SHOW BEFOREP "a "afalse