-/* Compare strings S1 and S2, ignoring case, returning less than, equal to or
- greater than zero if S1 is lexicographically less than, equal to or greater
- than S2.
+/* Compare the character strings S1 and S2, ignoring case, returning less than,
+ equal to or greater than zero if S1 is lexicographically less than, equal to
+ or greater than S2.