# `Input.revert`

> Contract 2.0.0 · package sha256 `a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e` · generated from `configurator-runtime.d.ts` by `services/onsite-scripter/scripts/build-contract-docs.mjs`; edit the source, not this file.

Method of [`Input`](Input.md) · labs, `@experimental` · since 2.0.0 · called as `session.input.revert` · optional: reach it through `has()`

```ts
revert?(part: Part): void;
```

`commit: 'app'` only: show the scene model's pose again (a refused drop). Immediate.
Experimental: reach it through [`has(session, 'input.revert')`](has.md). Present whenever
`input.drag.commit.app` is, so [`has(session, 'input.drag.commit.app')`](has.md) brings it too.

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `revert` names no product |
| 2. A precedent | pass: [Babylon.js PointerDragBehavior (startDrag, onDragObservable, validateDrag)](https://github.com/BabylonJS/Babylon.js/blob/master/packages/dev/core/src/Behaviors/Meshes/pointerDragBehavior.ts) (row `G1`); [jQuery UI draggable (drag, revert)](https://api.jqueryui.com/draggable/) (row `G1`) |
| 3. Two apps, or labs | labs (`@experimental` at a stable path, reached through `has()` or `supports()`): it graduates when a second app uses it; apps today: app-04c2774145, app-37356bf09f, app-4762caacdc, app-f9a32142f1, app-fc07850558, app-fc306ec3dc |
| 4. The cheaper fix first | decided per need in Appendix B: rows `G1`, `K47` at tier labs, stable (a member only where no rule, data, asset or app code serves the need) |