Thereof
Definition 1 of 2
Pro Tip 1/3
Referential Clarity
Ensure 'thereof' clearly refers to something mentioned just before it to avoid confusion. The company announced its merger, and the benefits thereof, to the employees.
Pro Tip 2/3
Legalese Commonality
'Thereof' is often found in legal, formal, or academic texts, not general conversation. The terms of the contract, and the obligations thereof, were strictly defined.
Pro Tip 3/3
Partitive Usage
'Thereof' can imply a portion or component of something that was just mentioned. He donated his property, and a portion thereof, to the charity.