Picture Packer    *.PP1 (ST low resolution)
                  *.PP2 (ST medium resolution)
                  *.PP3 (ST high resolution)

This is a STOS packed screen without the STOS MBK header in front of the data.
Although the STOS screen format has a flag for the resolution this flag is set
to medium resolution for all *.PP? files. The only correct resolution info is
in the extension. A really brain died format.

See also STOS Memory Bank file format
