A page validator provides a list of Confluence pages that match the text entered by a user. The validator uses CQL (Confluence query language) to search across page titles:
The resulting cell value is a Confluence page link:
Warning message is displayed at the bottom of the cell if the cell value is not a valid page link:
Confluence administrators may limit the list of pages by specifying CQL filter in the Validator Text field:
For more information about CQL please refer to Confluence documentation.