ISUPPER()
 Determine if the leftmost character in a string is uppercase
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 Syntax

     ISUPPER(<cString>) --> lBoolean

 Arguments

     <cString> is the character string to be examined.

 Returns

     ISUPPER() returns true (.T.) if the first character is an uppercase
     letter; otherwise, it returns false (.F.).

 Description

     ISUPPER() is a character function that determines whether the first
     character of a string is uppercase.  It is the inverse of ISLOWER().
     Both ISUPPER() and ISLOWER() relate to the UPPER() and LOWER() functions
     which actually convert uppercase characters to lowercase, and vice
     versa.

 Examples

     .  These examples illustrate ISUPPER() applied to various values:

        ? ISUPPER("AbCdE")         // Result: .T.
        ? ISUPPER("aBCdE")         // Result: .F.
        ? ISUPPER("$abcd")         // Result: .F.
        ? ISUPPER("8ABCD")         // Result: .F.

 Files   Library is CLIPPER.LIB.