The sat-nms device driver definition language provides a number statements to manipulate driver variables within procedures. These are:
| SET | Assigns a value to a variable. |
| BITSET | Extracts a single bit from a variable and assigns it to another. |
| RANGESET | Changes the range definition of a variable. |
| BITSPLIT | Splits up a variable in single bits. Should no longer be used. |
| BITMERGE | Merges several variables each containing one bit to another variable. Should no longer be used. |