# KOS_OP_FAST_CLEAR
- **Style**: FASTVAR. Arg = fast local slot index.
- **Stack**: No stack effect. Clear slot.
- **Invariants**: Slot index in range.

**Example:** Clear slot 1.

| index | opcode     | arg | arg view | comment |
|------:|------------|-----|----------|---------|
| 2     | FAST_CLEAR | 1   | 1        | clear slot 1 |