Function:   Del()

               Del() could be described as the Clipper equivalent of the
               DOS del Command. It allows the (fast) deletion of quite
               some files at once, by using FCB calls. It should not be
               used on networks (I gather). In contrast to Clipper's
               ferase(), Del() requires the files to be in the current
               directory, but Del() can delete File Masks.

   Syntax:     Del(<cMask>) --> nCode

   Arguments:  <cMask> is the file (or file Mask) to delete.

   Returns:    .t. when file(s) deleted, .f. otherwise.

   Usage:      Del('*.NTX')    /* Ok */
               Del('\DATA\*.BAK')  /* <-- NOT OK!!!! */
               /* Path may not be submitted! */