My Dad had one very similar to this by called the Otrona 'Attache.' I used to use it to do my English homework on it, and would be the only person in the class, and possibly the whole high school, to bring my essays in 'Word Processed.'
Er.. using 'Wordstar' if I recall.
It had an orange VDU and yes weighed a fricken ton and a half.
I'm not much of a geek when it comes to programming etc. and remember punching in thousands of numbers and commas which I was copying out of a book, to make a "3D" sphere appear on the screen... which never bloody happened because of some unknown reason. Probably I missed comma or something. I got really pissed off after days of typing and never tried anything like that again. Probably scarred me for life and certainly put me off trying to understand programming gibberish for life.
Now I LOVE GUI... sorry. I'm an artist, not a maths / logic whiz.
I really tried, but as Dirty Harry said: "A man's gotta know his limitations..."
My Dad certainly kept in shape lugging this thing a few miles to work and back during the week. (Uni professor.)
I loved that thing though. Saved me from writers cramp time after time.