Ask about using word 2010 with NVDA


Dear all listers. 
I'm teaching writing skill, and students send me word document in .docx, I open it with MS Word 2010. I don't know much about using some function. So, I've questions. 
1. Are there any shortcut to do following things? 
- switching between comment or footnote frame and the main document. 
- Turning on and off track changes / editor revision. 
2. How to comment and giving footnote to spesific part of document for example a sentence or a phrase? 
Thank you. 

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