Comment by SwellJoe

I remember when I used to cringe that an application was built with Tcl/Tk because it would be very slow and need quite a bit more memory than a similar application written in C or C++. But, today, I suspect this editor is an order of magnitude faster and an order of magnitude smaller than Atom or VSCode (this is purely speculation, of course...but, I feel like it's a reasonable hunch, based on my experience with Tcl/Tk in the past).