Rotate Tool – This tool is used to rotate objects, groups, symbols, etc. Do not use this tool to rotate your view. You can rotate the selected object, or by changing your options in the Tool bar, you can rotate a copy of the selected object.
Design Layer Viewports – Design layer viewports replace layer links, they allow you to link information from one or more layers (even from another file) to the destination layer.
Creating Sheet Layer Viewports – You should be using sheet layer viewports to create drawings, they are the fastest, most powerful way.