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 | / |
+--------------------------+--------------+