> For the complete documentation index, see [llms.txt](https://docs.acecentre.org.uk/products/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.acecentre.org.uk/products/echo/appearance.md).

# Appearance

The app's primary mode of use is without the display for many users but for those who may want to look at the output they made need easier to read text and display elements. As such you can alter the

* Main entries in a list (colour, font, size)
* Current (Highlighted) item (colour, font, size)
* Message bar text and background colour
* And if using, the on-screen arrows

We have some themes that are presets for common colours and sizing. If you wish to set default use "System default"\
\
Please note - we don't allow changing the background colour. This can be white or dark - and use "dark mode" in iOS to do this


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# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.acecentre.org.uk/products/echo/appearance.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.