[badsectoracula]

It also should be noted that Oberon's UI (which you can try out by downloading the emulator from here[0]) might be an initial culture shock if you are used to a Windows-like interface, but when you learn how it works it actually is both very powerful and very consistent - which helps into usability since everything works the same way.

AFAIK Oberon was actually used by "regular people" at ETH Zurich for a long time.

(and a lot of people ran and still run their programs maximized anyway)

[0] http://www.projectoberon.com/

[Koshkin]

Mouse chording, ouch. (I firmly believe it is the worst idea in the history of personal computing.)

[philipswood]

Wasn't too bad to use.

Biggest gripe was finding a PC with a 3-buttoned mouse in the uni computer lab when it was full.

Being able to select, copy, paste and execute without touching a keyboard was cool.

(We used it a bit in a 3rd year computer science OS course)

[pjmlp]

People that worship the ACME editor might be of different point of view.