DOS Fn 24H: Set Random File Block Address

                                                         Compatibility: 1.0+ 
 Expects: AH    24H
          DS:DX address of an opened FCB
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 Returns: none
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    Info: Sets the randomRec field of the FCB to the file address that
          corresponds to the values of curBlk and curRec.

See Also: Directory and File Functions
          FCB File I/O
          42H (Lseek handle)
          DOS Functions
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