Complex sentence: Pocket Paint is a scaled down version of the raster graphics editor Microsoft Paint, and is designed to run on handheld devices under the Windows CE operating system for Handheld PC and Palm-size PC, but it is compatible with Windows Mobile 2002 and 2003.
Split into simpler sentences: Pocket Paint is a scaled down version of the raster graphics editor Microsoft Paint, and runs on Microsoft mobile devices. It is intended for handheld devices under the Windows CE operating system for Handheld PC and Palm-size PC, although it does run on Windows Mobile 2002 and 2003.