Changes
SymbOS
,Sorry, thats not object oriented. Please refer to: http://en.wikipedia.org/wiki/Object_oriented
== Graphical user interface ==
The complete content of a window is defined with "controls". These are e.g. slider, check boxes, text lines, buttons or graphics. The background or not visible areas of a window don't need to be saved in a bit-map buffer. If an area is restored on the display, its content will just be redrawed. Because of this the SymbOS GUI works much more memory-friendlier than most other 8-bit GUIs.
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== File system management ==