Autodesk Revit: How to rotate a plan at any angle?

Not so long ago, one of the readers of my russian blog posted a question — how to rotate a plan at 180°? It can be necessary while working with the objects that are plotted in the plan as inclined to each other at characteristics angels — for instance, in cases of complicated buildings. The user needed to construct complicated front stairs, that would be more convenient to be created north-oriented.

There are at least two methods to solve the issue — using crop view or shared coordinates.
It is convenient to use crop region rotation, if it is needed to turn only one plan and shared coordinates - when you need to direct several plans in the same way.

Autodesk Revit 2013 family editor: Annotation and detailing (free video on-line training)

I created first free and full on-line video Russian tutorial of Autodesk Revit Architecture in 2011 spring , then of Autodesk Revit MEP, Autodesk Revit Family editor, Autodesk Navisworks. Up to present days my training courses are ones in Russian web.

A lot of time I was planning the same training on English, but cause of my poor English skills I wanted to improve language first.But it takes a lot of time, so now I decided to record first version of tutorial.

I hope to update this material as soon as I improve my English.