Applications can call the GUI as a subroutine. The icons are fixed, so you will always work with the same desktop.
== [[Image:CBM .png|thumb|right]]CBM ==
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Aside the ROM resident GUI there is another surface for FutureOS, the command bar menu [[CBM|CBM]]. It consists of several flexible pull down menues menus and file selectors. You can easily use [[CBM |CBM]] for your own programs. Since all programs that use [[CBM|CBM ]] look similar its also easy to use different programs really in an intuitiveway.
== File system ==