How did you get here? From somewhere in [CELIA]
"Suddenly the elevator stops. After you exit, the machine goes down a bit and ceases functioning."
You are stuck in a place with no obvious exit. Although, there is plenty of graffiti on the walls to look at if you wish to pass the time. As is implied by the title, you will need to sift through the writings to find what you need. Some you may find useful later, but all but one are irrelevant for solving this particular riddle. When you find what you need, follow the instructions as specified.
SPOILER:
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“Perform the motions - draw them out. You should get a four-letter word as the answer.”
Remember to refer to the posts in Getting Started if you need some general tips.