Legal memo header Crossword Clue

 The answer to the crossword clue "Legal memo header" is IN RE. This is a Latin phrase that means "in the matter of". It is often used at the beginning of a legal memo to identify the subject matter of the memo.

Here is an example of how the phrase "IN RE" would be used in a legal memo:

IN RE: The Case of the Missing Dog

This would indicate that the memo is about the case of a missing dog.

The phrase "IN RE" is also used in other legal documents, such as court orders and pleadings. It is a way of indicating that the document is about a particular matter, without having to state the matter in full.

I hope this helps!