UNFAULT command

## 2.45 `UNFAULT` command

### 2.45.1 Syntax

`UNFault`

### 2.45.2 Purpose

Undo any action from `fault` commands.

### 2.45.3 Comments

This command reverses the action of all `fault` commands.
It will also clean up any side effects of an aborted `sweep` command.
`Unfault` is automatically invoked on any `clear` command.
If you change the circuit in any other way, `unfault` will bring back the old on top of the changes. This can bring on some surprises.

### 2.45.4 Example

`fault R66=1k`
  R66 now has a value of 1k, regardless of what it was before.
`unfault`
  Clears all faults. In this case, R66 has its old value again.

`unfault` can bring on surprises. Consider this sequence ...

    V1   1   0    ac  1
    C3   1   2    1u
    R4   2   0    10k

`fault C3=100p`
  C3 is 100 picofarads, for now.
`modify C3=220p`
  C3 is 220 pf, for now. It will be restored.
`modify R4=1k`
  R4 is 1k. It will not be restored.
`restore`
  C3 back to 1 uf, but R4 still 1k.