Adding GMDs is a local edit. Do not add GMDs to OCLC records.
A general material designation (gmd) should be added to all records for braille, large print material, larger print material, and all non-print formats.
For video games and computer games, use [electronic resource].
For all sound recordings except preloaded audio players, use [sound recording]. This includes Vox books and other audio-enabled books, as well as records for audiobooks with an accompanying book.
For preloaded audio players such as Playaways or GoReaders, use [electronic resource].
Use a term from this list:
braille
electronic resource
filmstrip
flash card
game
kit
microform
microscope slide
model
realia
slide
sound recording
text (large print)
toy
transparency
videorecording
Rev. 02-2024