B. Currently reserved for use within KDE
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## B. Currently reserved for use within KDE

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

Key | Description | Value Type
--- | --- | ---
`Dev` | The device to mount. | string
`FSType` | The type of file system to try to mount. | string
`MountPoint` | The mount point of the device in question. | string
`ReadOnly` | Specifies whether or not the device is read only. | boolean
`UnmountIcon` | Icon to display when device is not mounted. Mounted devices display icon from the `Icon` key. | localestring

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