> ## Documentation Index > Fetch the complete documentation index at: /llms.txt > Use this file to discover all available pages before exploring further. # Echo Trail > A moving element renders with N ghosted copies of itself at t minus i times delta, opacity stepped down per ghost; one traversal, echoes collapsing into the settled element at rest. # Echo Trail A moving element renders with N ghosted copies of itself at t minus i times delta, opacity stepped down per ghost; one traversal, echoes collapsing into the settled element at rest. **Echo Trail** ```html echo-trail.html theme={null} Echo Trail ``` Copy npx hyperframes add echo-trail to the clipboard That writes one file: `compositions/components/echo-trail.html`. ## Paste it into your composition Open `compositions/components/echo-trail.html` and copy what is inside into your own composition. A component has no size or duration of its own. It takes both from the composition you paste it into. ## Variables Every one of these has a default, so the piece works untouched. Set the ones you want to change on the element: | Variable | Default | Accepts | What it does | | - | - | - | - | | `echoes` | `4` | number | Ghost copy count, clamped 2 to 6. | | `delta` | `0.09` | number | Lag between successive ghosts in seconds, clamped 0.03 to 0.3. | | `path` | `sweep` | `sweep`, `rise`, `arc` | Authored traversal preset. | | `accent` | `green` | `green`, `blue`, `violet` | Subject accent color: green rides --brand, blue rides --accent, violet rides --accent-2. | | `exit` | `none` | `none`, `fade`, `up` | Optional departure. Default none: the settled element holds until the frame cuts. | Set them with `data-variable-values` on the element that mounts it. These are the defaults, so this behaves exactly like the preview above until you change one: ```html wrap theme={null}
``` Tagged `motion-primitive` `demonstrate` `trail` `onion-skin` `ghosts` `deterministic`. ## Related topics * [Browse the complete Catalog](/catalog.md) * [Add assets and Catalog items in the browser editor](/studio/assets-and-blocks.md) * [Put blocks together into one video](/concepts/compositions.md) ## Related topics - [Echo Smear](/catalog/components/echo-smear.md) - [Cursor Glyph Trail](/catalog/components/cursor-glyph-trail.md) - [ASCII Trail Reveal](/catalog/components/ascii-trail-reveal.md) This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.