# Slot: tail_used 


_The arrow tail's y, read from a result container (same reference form a Layer uses). What lets a panel point AT a computed value — a curve's height at a marked x — without that height being typed into the spec._



<div data-search-exclude markdown="1">



URI: [prov:used](http://www.w3.org/ns/prov#used)
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## Applicable Classes

| Name | Description | Modifies Slot |
| --- | --- | --- |
| [Annotation](../classes/Annotation.qmd) | A positioned text label on a panel, in axes-fraction coordinates |  no  |






## Properties

### Type and Range

| Property | Value |
| --- | --- |
| Range | [DataRef](../classes/DataRef.qmd) |
| Domain Of | [Annotation](../classes/Annotation.qmd) |
| Slot URI | [prov:used](http://www.w3.org/ns/prov#used) |

### Cardinality and Requirements

| Property | Value |
| --- | --- |
### Slot Characteristics

| Property | Value |
| --- | --- |
| Owner | [Annotation](../classes/Annotation.qmd) |












## Identifier and Mapping Information





### Schema Source


* from schema: https://w3id.org/tvbo/figure




## Mappings

| Mapping Type | Mapped Value |
| ---  | ---  |
| self | prov:used |
| native | tvbo:tail_used |




## LinkML Source

<details>
```yaml
name: tail_used
description: The arrow tail's y, read from a result container (same reference form
  a Layer uses). What lets a panel point AT a computed value — a curve's height at
  a marked x — without that height being typed into the spec.
from_schema: https://w3id.org/tvbo/figure
rank: 1000
slot_uri: prov:used
owner: Annotation
domain_of:
- Annotation
range: DataRef
inlined: true

```
</details></div>