What's the most important clauses in your rental agreement?

[Brandon Holley]

Hello BP,

I wanted to reach out to the experts and ask, What's the most important clauses, statements, sentences, and/or paragraphs in your rental agreements/contracts?

I'm currently building our rental contract in house before sending it to our lawyer.

I'd like to put together a fairly comprehensive list for others to reference. Thanks for your help! 

Here's an example

For payments be sure to have each payment satisfy any/all fees and penalties first, then apply to current rent