> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tackstudio.co/llms.txt
> Use this file to discover all available pages before exploring further.

# First baseline alignment

> Control where the first line starts.

The **first baseline** is where the first line of text sits relative to the top of its box. Paragraph Plus gives you two controls over it: an exact pixel value, or a preset measurement.

## Baseline slider

A single slider that nudges the first line down from its default starting position, in pixels. Drag or type a value, or use the preset menu for common values (0, 10, 20, 30, 40, 50, 75, or 100px).

## Baseline dropdown

A dropdown that chooses which font metric measures the gap between the top of the box and the first baseline:

| Option             | The first baseline is placed so...                                                                                          |
| ------------------ | --------------------------------------------------------------------------------------------------------------------------- |
| Ascent *(default)* | The font’s ascent (the top of its tallest ascenders, like the "d") touches the top of the box.                              |
| Cap Height         | The top of capital letters (like "T") touches the top of the box.                                                           |
| Em Box             | The top of the font’s em box (its full design square) touches the top of the box. The standard choice for Asian (CJK) text. |
| Leading            | The gap equals the line’s leading value, so the first line is spaced exactly like every line after it.                      |
| Legacy Metric      | The first baseline is calculated the way older versions of Adobe’s text engine did, as a backwards-compatibility option.    |
| Min Asian          | The minimum offset is used, calculated from Asian (em-box) metrics.                                                         |
| Min Roman          | The minimum offset is used, calculated from Roman (ascent) metrics.                                                         |
| Typo Ascent        | The font’s typographic ascender metric (set by the type designer) is used instead of the rendered ascent.                   |
| X Height           | The top of lowercase letters (like "x") touches the top of the box, so ascenders poke above the edge.                       |

<Callout icon="lightbulb" color="#F05F3F">
  The baseline dropdown is only editable while the baseline slider above is set to **0**. As soon as you set a non-zero value, it takes over and the dropdown is disabled. Set the value back to 0 to choose a different preset.
</Callout>