I'm rather bemused by this, as it's targeting a subset of Turbo Pascal 5.5 while emulating the Turbo Pascal 1.0 UI. I used Turbo Pascal 1.0 on CP/M-80, and Turbo Pascal 1.0 through 4.0 (or thereabouts) on DOS (and UCSD Pascal on three different systems before that), and it's fascinating looking back at it how the notion of the "IDE" developed an expanded over that time.

The IDE shown here is, as I say, pretty much the Turbo Pascal 1.0 IDE...and it truly was an IDE. Being able to run your code with a keystroke or two—and then to see your next syntax error in the editor—it was mindblowing.