In plane checklist issue

Sorry about another question (a simple one)but you guys are just too good. When getting the plane ready to taxi, I go through the plane checklist on the screen, I get them all except for one that says SIGNS. I don’t know what this means, and I don’t know what to check


I believe it’s seatbelts and no smoking.

Got it, I’ll try that when I’m done with this flight, thanks!