For

Control flow statement, open statement clause, or operator depending on 
context.

Syntax
   For iterator = startvalue To endvalue [ Step increment ]
or
   Open [ device ] "filename" For filemode As #handle
or
   declare operator For ( byref stp as datatype )

Example
   See example at For...Next.

See also
   * For...Next
   * Open
   * Operator

   
