What's the red comma thing on the upper part of the white paper thing?

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Current Events » What's the red comma thing on the upper part of the white paper thing?
Also my brother got me Dwarf Fortress for Christmas and I have no idea wtf is going on. Any tips?
Getting C's and D's, saying thanks and please.
You broke the golden rule, you're staying after school.
https://i.imgur.com/IP2o6rv.png

That's what I'm talking about btw
Getting C's and D's, saying thanks and please.
You broke the golden rule, you're staying after school.
Its all Agak to me
There's resounding gongs and clanging bowls, there's cats to guide my soul
24 hour party parrot
Current Events » What's the red comma thing on the upper part of the white paper thing?