Slot: extension_tag
a tag associated with an extension
URI: [linkml:extension_tag](https://w3id.org/linkml/extension_tag)
Alias: tag
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [Extension](Extension.md) | a tag/value pair used to add non-model information to an entry | no |
| [Annotation](Annotation.md) | a tag/value pair with the semantics of OWL Annotation | no |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [Uriorcurie](Uriorcurie.md) |
| Domain | [Extension](Extension.md) |
| Domain Of | [Extension](Extension.md) |
### Cardinality and Requirements
| Property | Value |
| --- | --- |
| Required | Yes |
### Slot Characteristics
| Property | Value |
| --- | --- |
| Key | Yes |
## Identifier and Mapping Information
### Schema Source
* from schema: https://w3id.org/linkml/meta
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | linkml:extension_tag |
| native | linkml:extension_tag |
## LinkML Source
name: extension_tag
description: a tag associated with an extension
from_schema: https://w3id.org/linkml/meta
rank: 1000
domain: extension
key: true
alias: tag
domain_of:
- extension
range: uriorcurie
required: true