BM2

A .bm2 file is just a renamed .bmp file. You can open this file in any image editor that you wish. To create a bm2 file, either rename a file's extension from .bmp to .bm2, or while saving an image, type its full name inside of quotes. An example, would be "ships.bm2".

To convert an image into a bm2, open any image in your favorite image editor. Then, choose Save As, select the type as Windows Bitmap Format (*.bmp), and enter the filename completely inside of quotes with a bm2 extension, such as "ships.bm2".