Compose KeyboardSelect one of the following options:Match physical keyboard as reported by X ServerSelect this option to display the same keyboard layout as the physical keyboard that is
attached to the system.Alphanumeric keyboard sorted alphabeticallySelect this option to display a keyboard with the keys sorted in
alphabetical order.Alphanumeric keyboard arranged by letter frequencySelect this option to display a keyboard with the keys sorted in order of usage.Read keyboard from fileSelect this option to display a bespoke keyboard. The keyboard contents and layout
are specified in an XML file. Select the file from the drop-down list or activate Browse
to search for the file. Custom KeyboardsUse this drop-down list to select a directory that contains other customized keyboard files
that  can display or activate Browse to select a directory.
