Diddle is a drawing application for Palm handheld computers. Diddle sketch refers to the images created with it, and to its associated Palm OS Database files, usually named DiddleDB.pdb and DiddleIDB.pdb. Images are bi-level, 160×160, uncompressed.
Diddle is based on a program named Doodle .
The ASCII string "
DIDL" appears at offset 64.