# DocBook Cross References

## Modes

`db.xref.content.mode`

- FIXME

`db.xref.tooltip.mode`

- FIXME

## Templates

`db.ulink.tooltip`

- Generates the tooltip for an external link

`db.xref.content`

- Generates the content of a cross reference

`db.xref.target`

- Generates the target identifier of a cross reference

`db.xref.tooltip`

- Generates the tooltip for a cross reference

`db.xref.content.mode`

FIXME

### Parameters

`xrefstyle`

- The cross reference style, usually from the `xrefstyle` attribute

`role`

- For a role-based `xrefstyle`, the role of the cross reference

### Description

`db.xref.tooltip.mode`

FIXME

### Description

`db.ulink.tooltip`

Generates the tooltip for an external link

### Parameters

`node`

- The element to generate a tooltip for

`url`

- The URL of the link, usually from the `url` attribute

### Description

`db.xref.content`

Generates the content of a cross reference

### Parameters

`linkend`

- The id of the linked-to element, usually from the `linkend` attribute

`target`

- The linked-to element

`xrefstyle`

- The cross reference style, usually from the `xrefstyle` attribute

`role`

- For a role-based `xrefstyle`, the role of the cross reference

### Description

`db.xref.target`

Generates the target identifier of a cross reference

### Parameters

`linkend`

- The id of the linked-to element, usually from the `linkend` attribute

`target`

- The linked-to element

`is_chunk`

- Whether `target` is known to be a chunked element

### Description

`db.xref.tooltip`

Generates the tooltip for a cross reference

### Parameters

`linkend`

- The id of the linked-to element, usually from the `linkend` attribute

`target`

- The linked-to element

### Description