DOS Fn 4fH: Find Next Matching File

                                                         Compatibility: 2.0+ 
 Expects: AH    4fH
          DS:DX address of data from a previous Fn 4eH Find 1st File
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 Returns: AX    error code if CF is set to CY (i.e., if no more matches)
          DTA   is filled with a FileInfoRec (if no error)
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    Info: Continues a file search begun by a previous call to fn 4eH (find
          first file).

    DS:DX points to a 43-byte buffer containing information returned by Fn
          4eH (find first file) -- either the DTA or a buffer copied from
          the DTA.

          Use this after a call to Fn 4eH.  The next filename matching the
          selected wildcard filespec and file attribute will be copied into
          the buffer at DS:DX, along with other information (see
          FileInfoRec the layout of the return information and see Fn 4eH
          for related details.

   Notes: The DS:DX parameter is required for DOS 3.0+.  It enables you to
          use recursive searching techniques more easily (for instance to
          search an entire directory tree).

See Also: Fn 43H (find first file)
          Directory and File Functions
          DOS Functions
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