Control_Edit

 The specific forms for control edit descriptors follow:

   +--------------------------+--------------+
   |         Function         |    Format    |
   +--------------------------+--------------+
   | Scale factor             | kP           |
   | Blanks are null (input)  | BN           |
   | Blanks are zero (input)  | BZ           |
   | Characters in input      | Q            |
   | Plus sign (always)       | SP           |
   | Plus sign (never)        | SS           |
   | Default plus sign        | S            |
   | Skip spaces (same as TRn)| nX           |
   | Position (Tab)           | Tn           |
   | Relative left tab        | TLn          |
   | Relative right tab       | TRn          |
   | Carriage control         | $ or \       |
   | Terminate list           | :            |
   | Terminate record         | /            |
   +--------------------------+--------------+