> For the complete documentation index, see [llms.txt](https://frangiordano96.gitbook.io/ae-expressions/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://frangiordano96.gitbook.io/ae-expressions/getting-started-with-expressions/after-effects-quick-expressions-library.md).

# After Effects - Quick Expressions Library

**Constantly increase or decrease scale:**

```javascript
var scaleSpeed = 3;
var scaleFactor = (time-inPoint)*scaleSpeed;
value - [scaleFactor, scaleFactor]; // Use - to decrease and + to increase
```