A page using the Transclusion Macro stores the information about which documents it is transcluding from by the use of the artificial property named TranscludedDocumentTitles. The format of the values is space-key.page-title.
In order to use the artificial property to list pages a given page is actually transcluding the Page Key property is of the form space-key.page-title.
To list all pages on a page that is actually transcluding, the following query can be used with, for instance, the Display Table Macro:
$<Page Key>~(${TranscludedDocumentTitles})
