# Includable

The `<Includable>` element defines operations that can be used elsewhere in the field standardization dictionary.

Any variables defined or modified by child elements revert to their previous state when the `<Includable>` operations complete. The `<Includable>` and `<Include>` elements can be used to push/pop the variable state to/from a stack to perform more complex operations.

Attribute | Description
--- | ---
`id` | Identifies the collection of operations. Use the value with the Include element to include the operations elsewhere.
`source` | Set this to `include-only` to run the operations only when included using an Include element. By default, the operations are also executed where the `<Includable>` element is located.

For an example, see the Include element.

_FT_HTML5_bannerTitle.htm