HELPLIB.HLB  —  Lexicals  F$CVUI  Arguments
 start-bit

    Specifies the offset of the first bit to be extracted. The
    low-order (rightmost) bit of a string is position number 0
    for determining the offset. Specify the offset as an integer
    expression.

    If you specify an expression with a negative value, or with a
    value that exceeds the number of bits in the string, DCL displays
    the INVRANGE error message.

 number-of-bits

    Specifies the length of the bit string to be extracted, which
    must be less than or equal to the number of bits in the string
    argument.

    If you specify an expression with a negative value, or with a
    value that is invalid when added to the bit position offset, DCL
    displays the INVRANGE error message.

 string

    Specifies the character string to be edited.
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