Little Draw is a raster graphics editor for DOS, developed by Shachar Greenberg and Eyal Mush. It has a native .LDW graphics format.
LDW files start with ASCII "
LDRAW", then 3 characters for the format version: "
96a" for the only known version.
The distribution includes some example LDW files, information about the LDW format (README.DOC, "Programmers manual" section), and a simple LDW viewer with source code.