MacDraw
From Just Solve the File Format Problem
MacDraw (later ClarisDraw) is a vector-based drawing program for the Macintosh. It was based on LisaDraw for the earlier Apple Lisa computer. Versions were called MacDraw II and MacDraw Pro.
EazyDraw 6.0.3 Retro, a program that will run on current Macs as of 2014, can load the old MacDraw files.
File Identification
MacDraw version 0.* header begins with ascii MD
MacDraw version 1.* header begins with ascii DRWGMD
MacDraw II header begins with ascii DRWG
MacDraw Pro header begins with ascii dDocD2
ScreenShots
