Symbolic Link
SYLK

    (SYLK) A Microsoft file format for
   spreadsheets, (not to be confused with symbolic link).

   SYLK format existed in one form or another in as early as
   1987, and was part of Excel v1.0.  It is is an outgrowth of
   VisiCalc DIF file format.

   SYLK format is ascii text and represents information about
   both formula, value, and some formatting information, which
   makes it something like an RTF for spreadsheets.  It is used
   as a general tabular data exchange format.

   <http://netghost.narod.ru/gff/graphics/summary/micsylk.htm>.

   [Reference?]

   (2004-04-08)