Command Array Structure

Byte	Function
1	map symbol type: 0 – vectorial; 1 – raster

	Vectorial map symbol

2	map symbol height;
3	minimum value of map symbol x coordinate + 127;
4	maximum value of map symbol x coordinate + 127;
5	minimum value of map symbol y coordinate + 127;
6	maximum value of map symbol y coordinate + 127;
7	drawing command 1; (see Commands of drawing vectorial styles)
	……
	drawing command n; (see Commands of drawing vectorial styles)

	Raster map symbol

2	the number of rasters in a map symbol
3 - 4	width (x) of the 1^st raster;
5 - 6	height (y) of the 1^st raster;
7 - 8	coordinate of base point x for the 1^st raster;
9 - 10	coordinate of base point y for the 1^st raster;
11-14	offset of the 1^st raster in the array;
15-18	mask offset of the 1^st raster in the array;
……	……
……	width (x) of the n^th raster;
……	height (y) of the n^th raster;
……	coordinate of base point x for the n^th raster;
……	coordinate of base point y for the n^th raster;
……	offset of the n^th raster in the array;
……	mask offset of the n^th raster in the array;
……	DIB of the 1^st raster;
……	DIB for the mask of the 1^st raster;
……	……
……	DIB of the n^th raster;
……	DIB for the mask of the n^th raster

DIB can be color one as well as monochrome one. The color of transparent pixels must be black. The raster mask is specified by a monochrome DIB in which white pixels correspond to transparent pixels of the raster and black pixels to image pixels.