BMP stands for BIT MAPPEDPICTURE. This data file format is widely used by Microsoft Windows as the 'wallpaper' that decorates the `desktop'. Any BMP image can attached to a CIRCAD data file. Once attached, the image will zoom and pan along with the other placed ojbects.

The encoding scheme is relatively simple consisting of a file header, a color translation table, and a raster pixel image. Color images are automatically translated to greyscale by the file import module.

BYTES DESCRIPTION
00-01 File ID (must be "BM").
02-05 File size (ignored).
06-09 Reserved (ignored).
0A-0D Header size (including color palette).
0E-11 Secondary header size (must be 028h).
12-15 Horizontal pixel count (width).
16-19 Vertical pixel count (height).
1A-1B Picture plane count (must be 1).
1C-1D Picture bit count (1, 4, 8, or 24).
1E-21 Compression algorithm (0 or 1).
22-25 Image size in bytes (ignored).
26-29 Horizontal DPM (dots per meter).
2A-2D Vertical DPM (dots per meter).
2E-31 Colors used count (ignored).
32-35 Colors needed count (ignored).
36-435 RGBx color palette (processed).
436-?? Pixel image data (usually uncompressed).

CIRCAD's transparent import filtering allows you to read a BMP file by simply selecting the desired file when using the Open File function.
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