This is a font of characters from the FreeSerif font distributed by the GNU FreeFont project. The font is in the form of blocks similar to what would be used in a printing press. The purpose of this font is to facilitate adding text to an object, especially in the Wings3D design software. Block characters can be concatenated using the "Put On" command, followed by a "Weld" command to make them into a single object. Then remove the lines between characters, and the whole text string can be welded to any simple surface.