Kendra Little shows Management Studio execution plan improvements in 2016:
The best features are the ones that you use all the time. SQL Server 2016 Management Studio’s bringing improvements in navigating around execution plans.
Click + Mouse Scroll: Zooming!
You can now make your plans bigger and smaller with this combo. It will zoom into the region where you have the mouse.
Click + Drag lets you move the plan
This is really handy for moving right to left.
Good for those times when SQL Sentry Plan Explorer isn’t available.