1 Drawn map is described by a list of points, which define polylines to draw and format of each polyline.

     2 

     3 Point is defined as

     4 || Big-endian int16 || Big-endian int16 || Byte ||

     5 || *X* coordinate || *Y* coordinate || *flags* ||

     6 

     7 where *flags* are:

     8 || 8th bit || 7th bit || 6th-1st bits ||

     9 || if set, this is a first point of polyline || if set, polyline is erasing || *width*(thickness) of line ||

    10 

    11 where *width* defines `(width * 10) + 6` pixels width line to draw

    12 

    13 Second and further points of polyline have 8th bit of *flags* unset, the content of others doesn't matter.

    14 

    15 Single-point polyline defines a circle (well, that's kinda obvious).