Just keep in mind that using single quotes around the pattern
(instead of /.../) does not make it a plain string — it's still a
regex. Although this is not relevant here, it might make a difference in other cases:
#!/usr/bin/perl -l
my $s = 'xABCxACxABBCxAB*Cx';
print join(' - ', split('AB*C', $s)); # x - x - x - xAB*Cx