Parameters associated with  command |
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| Name | Alias | Type | Value |
| vname | n | short | maximum of 6 characters |
| alias | a | short | maximum of 2 characters |
| vtype | t | short | i (int), r (real), s (short), l (long), f (file) |
| index | i | int | pointer to IU, RU, SU |
Parameters associated with  command |
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| Name | Alias | Type | Value |
| vname | n | short | variable name |
| value | v | - | depends on vname |
| label | l | long | label associated with value in radio buttons |