One function the plugin supports is strcmp(string1 as string, string2 as string) As Integer. This is a C++ version of REALbasic's StrComp, which contains a few bugs. Strcmp is case sensative, so if you don't want it to be, do something like this: strcmp(uppercase(mystr1),uppercase(mystr2)).
Two more functions have been added, isUpper(char as string) As Boolean and isLower(char as string) As Boolean. They simply tell you whether the character passed is uppercase, or lowercase.
If you've got any other suggestions or requests, ideas, etc., please e-mail jackal@bbq.detour.net and I'll try to add your request.