I remember I posted AGES ago that I realized that the HUD scripting might allow for this kind of classic HUD. Someone decided that was true and did it. I'm really quite impressed...
The original Marathon game interface, ported to Aleph One as a Lua HUD. Designed for use with M1A1 or Aleph One 1.0. It will not work with the native Marathon 1 downloads bundled with Aleph One 1.1 and later. A compatible version may be found in those downloads.