For historical reasons KDE is using some KDE-specific extensions
that are currently not prefixed by a X-KDE- prefix.
KDE specific keys: ServiceTypes,
DocPath, InitialPreference
KDE specific types: ServiceType,
Service and FSDevice
KDE also used the Keywords key before it was
standardized, using commas instead of semi-colons as separators.
At the time of standardization, the field had been prefixed with a
X-KDE prefix, but the Trinity fork still used
the non-prefixed variant.
KDE uses the following additional keys for desktop entries of the
FSDevice type.
Table B.1. FSDevice Specific Keys