[Gormo]

But is Impulse Tracker a true textmode application? While not full of flashy graphics and icons, it uses lots of widgets and layout features that put it squarely in conventional GUI territory. And the repo contains the VESA code for rendering the equalizer UI.

[bitwize]

It was a common technique in the DOS era to simulate GUIs with text. This was not just done with the characters in codepage 437 either; using redefinable character sets in the EGA and VGA, graphical elements such as buttons, input fields, etc. could be rendered in character cells. By redefining characters where the mouse pointer was supposed to be, a pixel-accurate mouse pointer could be created. Not just trackers used this technique, but e.g., later versions of Norton Utilities did as well.

[rzzzt]

Apparently this was hidden behind the Alt+F12 key combo? I might have to fire up a copy as I don't remember ever seeing this bit. Edit: it doesn't seem to be enabled in 2.14. Oh well, got to hear "Blue Flame" again!

The rest of the application runs in 80x50 text mode, and it included a character editor so you could customize the box drawing characters if you were so inclined.