Even though the UI's are largely text, in some ways they make a greater effort to communicate with the user than many of today's "best practices."
In this case, it's both big things like the verbosity of the command responses, and little things like the beautiful font with its crossed sevens. More information above the page scroll? The top of the window gets a jagged edge like a torn piece of paper. (The anti-skeuomorphic crowd should avert its eyes.)
Also notice how technical information is expressed in human terms. How much memory is left? 11,334 "words." I know that a word can also be a technical term, and I don't know if that's the context being used here, but there were other programs of the era that translated bytes into human-thinkable words, so it's possible that this is doing the same.
Along those same lines, notice how an unknown or unexpected time is expressed as "forever" and not %NAN% like I see everywhere from airport status boards to AppleTV. It reminds me of AmigaDOS, which in directory listings could report file access as "Yesterday at 6pm" or "Tuesday at 1:35am." This could even be extended. My friend's A1000 showed file dates like "Last Christmas."
It's a kind of attention to detail that is missing in higher systems today, even though today's machines have far more horsepower to make it happen.