> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes-codex-docs-human-first-refactor.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# Code Highlight Sweep
> A highlight band sweeps across a target line while the surrounding context dims — draws the eye to one line. `line` is 0-based: `line: 1` targets the second displayed line (unlike code-scroll, whose target is 1-based).
A highlight band sweeps across a target line while the surrounding context dims — draws the eye to one line. `line` is 0-based: `line: 1` targets the second displayed line (unlike code-scroll, whose target is 1-based).
`code` `code-animation` `highlight` `developer`
## Add it to a project
```text theme={null}
Add the Code Highlight Sweep block from the HyperFrames Catalog to this project.
Replace the demo content with mine and match the existing design and timing.
```
```bash theme={null}
npx hyperframes add code-highlight
```
## Details
| Property | Value |
| ---------- | --------- |
| Type | Block |
| Dimensions | 1920×1080 |
| Duration | 5s |
**Installed files**
| File | Target | Type |
| --------------------- | ---------------------------------- | ----------------------- |
| `code-highlight.html` | `compositions/code-highlight.html` | hyperframes:composition |
## Use it
Ask your agent to replace the example content, match the project style, and place the block at the right moment in the video.
**Wiring it by hand.** The installed block can be added to a host composition with:
```html theme={null}
```