These are simply hints for a puzzle on B1F, there are 4 such hints scattered around B1F. I do plan adding a hint system for non optional puzzles in the final game
Ah thank you sir, I actually found it out myself too. I really enjoyed your game, albeit I would suggest to drop some clues as some interactions are very specific and some puzzles are very unforgiving as when you are not being able to solve, you are basically stuck. all by all very nice game