In SQL Server Management Studio (SSMS) for SQL Server 2016, a new search tool called Quick Launch was added. It's this bar up the top:
Note that there's another bar underneath it to the left. That's not the Quick Launch bar. That's the Find bar.
While the Find bar is useful for searching for text within queries, etc., the Quick Launch bar is useful for searching within SSMS itself.
This is great because it means you don't have to remember where all the options for various things are set. Here's an example:
I typed theme and it told me about relevant things. The first is spot on, and is where I can change the theme, and the second is relevant too. Perhaps it's just the fonts that I want to change.