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 ddow()              Return the week day according to German standards
------------------------------------------------------------------------------
 Declaration
   date.hdr

 Syntax
   func int ddow extern
   param value date dDate

 Arguments
   dDate is the date to convert.

 Return
   An integer between 1 and 7.

 Description
   The ddow() function converts dDate into a number representing the day
   of the week. Monday is considered day 1 and Sunday is day 7.

 Example
   #define EXAMPLE_DATE
   #include example.hdr

   proc Test_ddow
   vardef
     date dNow
   enddef
   dNow := today()
   ? dow( dNow )
   ? ddow( dNow )
   endproc

   proc main
   Test_ddow()
   endproc