Edit 'XMP' metadata < https://en.wikipedia.org/wiki/Extensible_Metadata_Platform> in a variety of media file formats as well as edit bookmarks (aka outline aka table of contents) and documentation info entries in 'pdf' files. Can detect and use a variety of command-line tools to perform these operations such as 'exiftool' < https://exiftool.sourceforge.net/>, 'ghostscript' < https://www.ghostscript.com/>, and/or 'pdftk' < https://gitlab.com/pdftk-java/pdftk>.