The Keywords folder in the Config folder contains common list of audio, image, and video formats. These keywords are used in variantTypeAudio/Image/Video editing and creation forms, for the edition of the variantTypeAudio/Image/Video steps/item@format string attribute.
When installing, using all xxx_InstallConfig.xml loaders, the following data is imported from the Keywords folder:
ImageFormatSuggestions.xml
AudioFormatSuggestions.xml
VideoFormatSuggestions.xml