/sys$common/syshlp/HELPLIB.HLB  —  Lexicals  F$TYPE
    Returns the data type of a symbol. The string INTEGER is returned
    if the symbol is equated to an integer, or if the symbol is
    equated to a string whose characters form a valid integer.

    The string STRING is returned if the symbol is equated to a
    character string whose characters do not form a valid integer.

    If the symbol is undefined, a null string ("")  is returned.

    Format

      F$TYPE(symbol-name)
Additional Information: explode extract
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