I'm very new to yEd. It seems useful to show IDEF0 concept of Input>Action>Output. As such the Labels are long to minimize need for following text while viewing graph
I'm using the standard Excel input for yEd 18.104.22.168, which is the current version, on a Mac running Yosemite
I changed the Preferences, a suggested; but, nothing changed???
Closed graph and re-imported but, no change.