Very impressive piece of software, genuinely kept me engaged throughout all of it. Scratched an Itch I didn't know I had.
Mild spoilers (i.e. what you can't find in the game so you don't spend hours looking for it)
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Practically all of the "hidden content" is behind stuff in the "extras" area, which will lead you to new content. All of the areas that cause the screen to glitch out are fully unaccessible, and unless this game has managed to hide internal files away from the amateur dataminer, do not exist within the game. So anyone who wants to know what the "symbol" object is is out of luck, sorry.
Also, fun fact: practically every screen in this game is its own individual gif. The game works like Myst and it's contemporaries, with each "smaller window" being baked into the whole screen image itself.
Still, I heavily enjoyed this piece of software. Scratched an itch for early CD-Rom "games" that I didn't know I had, and while my desire to know EVERYTHING may have ended up fruitless (blame my own mentality, I understand the mystery via omission but my brain always craves more), I do hope we see more stuff like this soon.
Now tell me how the Super CD-ROM2 System ties into this, that potential red herring has completely captured my attention what does it MEAN