DiddleBug sketch
From Just Solve the File Format Problem
DiddleBug is a drawing and sticky-note application for Palm handheld computers. DiddleBug sketch refers to the images created with it, and to its associated Palm OS Database file, usually named DiddleBugDB.pdb. The images are bi-level, 160×160, compressed.
DiddleBug is based on Diddle, which is based on Doodle [1].
See also
Identification
The ASCII string "DIDB" appears at offset 64.
The string "Data" probably appears at offset 60, though this has not been confirmed.
