It is probably a hyperlink, but it could be an action.
1. Horsing around can lead to breaking equipment in the classroom or somebody getting hurt
2. leaving your backpack on the floor can cause someone to fall
3.something unexpected may happen and worsen the problem
4. it can corrupt the computer's files and deleted unsaved work.
if you want the sentences to be longer, add some words to them and make the message the same.
Nowadays, it's really just convention to use lowercase file names.
