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  Function 4FH (decimal 79) continues a directory search with a name that
  may match more than one directory entry because it contains wildcard
  characters. When you call this function, the DTA must contain the data
  returned by a previous call to function 4EH or 4FH.

  If this function finds a matching directory entry, it clears the carry
  flag and updates the DTA accordingly. If it fails to find a match, it sets
  the carry flag and returns error code 12H (no more files) in AX.

  The usual logic for a wildcard search with functions 4EH and 4FH follows
  this pattern:

  initialize DTA address with function 1AH
  call function 4EH
  WHILE carry flag = 0
        use current contents of DTA
        call function 4FH