# FeatureDescriptionLabel

Auto-generated from the config schema in the source — see the [config guide](https://jbrowse.org/jb2/docs/config_guide) for concepts. Provided by the `features` plugin. [View source](https://github.com/GMOD/jbrowse-components/blob/main/plugins/features/src/LinearBasicDisplay/featureDescriptionLabelConfigSchema.ts).

The feature displays' `labels.description`, the line drawn under each
feature's name: whether it `show`s, and the `field` it reads. A bare string
is the field. Shown descriptions still hide where features crowd the
screen, a zoom step before names do, whether or not names draw.

## Example usage

```js
{ type: 'LinearBasicDisplay', labels: { description: { show: false } } }
```

## Config slots

A setting written to it names members one by one: a member left out stays as it is, and `null` resets one. Slot types (`fileLocation`, `frozen`, ...) are explained in the [config slot types reference](https://jbrowse.org/jb2/docs/config_guides/slot_types). Slots a base configuration contributes are listed here too, so this table is the whole surface.

| Slot | Description |
| --- | --- |
| **show**<br>[`boolean`](https://jbrowse.org/jb2/docs/config_guides/slot_types#boolean) = <code>true</code> | draw a description line under each feature |
| **field**<br>[`featureField`](https://jbrowse.org/jb2/docs/config_guides/slot_types#featurefield) = <code>'jexl:get(feature,'note') &#124;&#124; get(feature,'description') &#124;&#124; get(feature,'function')'</code> | the field the description reads, such as `note`, or a `jexl:` expression over `feature`; the default reads `note`, else `description`, else `function`, and an empty value draws no description |