Great additions to syllabi

What are some of the things you have added to syllabi over the years that have saved you trouble down the road? Of course these are things that are prompted by difficulties in one way or another. These may seem obvious, but please share. I’ll start: 1. Grading scale given in syllabus to 100th of a percent (B=80-89.99) 2. Making accommodation letters an optional “assignment” for students to submit in Canvas so all of those things are in the same place 3. Page limits to all assignments (critical since AI can spit out 10 pages as easily as 3)