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 pickreverse()       Reverse the items of a list
------------------------------------------------------------------------------
 Declaration
   pick.hdr

 Syntax
   func logical pickreverse extern
   param _SLIST pList

 Arguments
   pList is the list to reverse.

 Return
   A logical indicating the success of operation.

 Description
   The pickreverse() function reverses the order of items in a list.

   Note that the whole list is copied during the operation, the original list
   is cleared, and its pointer is replaced with the new list's pointer.
   This function can only be used with string lists, but not with generic
   lists that contain non-character data.

 Example
   #define EXAMPLE_LIST
   #include example.hdr

   proc Test_pickreverse
   vardef
      _SLIST pList
   enddef
   pList := ExampleList()
   ?
   pickreverse( pList )              // reverse list
   ShowList( pList )
   pickclear( pList )
   endproc

   proc main
   Test_pickreverse()
   endproc