From Just Solve the File Format Problem
PWDraw is a simple drawing program for Windows 3.x. It was developed by PeachWare (contact: Charles Davis). It has a .drw vector graphics format.
DRW files are observed to start with bytes (hex)
20 03 84 03. Non-empty files likely always have ASCII "
CStroke" at offset 12.
- PWDraw - Feature-limited demo