string functions

has a set of functions returning string objects. These are made available to deal with filename construction, or to read from standard input. To be consistent with string type, string functions are named with both lower case and upper case letters.

Strings can be added or subtracted in the C-calculator mode. String addition s1 + s2 simply concatenates strings s2 to string s1. String subtraction s1 - s2 removes s2 from the end of s1. Note that the wild card `?' is supported in string subtractions.



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