The InDesign Client Plug-in adds XMP information to INDD files when they are saved in InDesign. This information is used by the Telescope InDesign I-Piece when it imports the INDD files to extract page previews, text, and other elements to create detailed representations of the InDesign documents (called Component Object Views, or COVs) within the Telescope system.
(Plug-in is for both Mac and Windows clients)