MSP is the native format for Windows Paint, a drawing program found in the early 1.0 and 2.0 versions of Microsoft Windows. In Windows 3.0 this program was replaced by Windows Paintbrush which writes Windows Bitmaps (BMP) by default, thus rendering MSP obsolete.
The default extension is MSP.
Supporting Platforms and Applications
MS-DOS, Microsoft Paint. The format is a simple monochrome format that was in wider use in the early days of Microsoft Windows. Today the MSP format is obsolete.
PMView supports MSP versions 1 and 2.
MSP is a monochrome, black/white format that uses a variant of run-length encoding.