signs
There are three official
signs posted outside of computer labs at Purdue over the course of any
given day: Class in session, Open, and Closed.
Notably, the “Class in session sign” is yellow, while the
“Open” sign is green and the “Closed” sign is
red. The visual rhetoric of these placards suggests that one can “proceed
with caution” into the room, even if a class is meeting and that
it is only truly closed when the door is actually locked by ITaP (Information
Technology at Purdue).
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