The environ.ini reader now skips comments (# or ;), blank lines, and
anything that is not KEY=VALUE, so the shipped file documents the
whole configuration surface: the core settings as-shipped (controls,
renderer, gauge canvas, plasma, single-window cockpit, frame rate,
Steam networking), the optional toggles (keyboard lighting, stick
flip, AA, particles, plasma scale/position, fixed seed), LAN hosting
without Steam, the developer/testing switches (RP412DEVKEYS,
L4CONSOLELEN, the Steam self-test), and the arcade multi-monitor
heritage variables. Stale L4MFDSCALE reference dropped from the
README.
Verified: the game boots on the commented file with values applied
(controls line honored, Steam transport up from the in-file switch).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>