1 03/31/83  ltrim
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 3 Syntax:  ltrim STRA STRB
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 6 Syntax as active function:  [ltrim STRA STRB]
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 9 Function:  returns a character string trimmed of specified characters
10 on the left.
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13 Notes:  The ltrim command, or active function, finds the first
14 character of strA not in strB, trims the characters from strA preceding
15 this character, and returns the trimmed result.  Space characters are
16 trimmed if strB is omitted.