Library /sys$common/syshlp/helplib.hlb  —  RTL Routines, STR$  STR$LEFT
    The Extract a Substring of a String routine copies a substring
    beginning at the first character of a source string into a
    destination string.

    Format

      STR$LEFT  destination-string ,source-string ,end-position
Additional Information: explode extract
Corresponding JSB Entry Point Returns Arguments
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