Comment 2 by bhirmanpour on 2013-02-16 18:34
This feature has been requested many times but put to low priority.

As a blind user, I think this is an essential feature. In fact this is the only reason I keep using Jaws for Windows.

This feature is essential for blind users who need to skim through a lot of documents on a daily basis. It should be regarded as an essential productivy feature.

I would be willing to compensate a developer for implementing this feature in NVDA together with the ability to modify reading speed during a say all.

If you are a developer and are willing to spend some time on these features, please contact me.

If I am following this ticket correctly, the 'Allow skim reading during say all' option in the Keyboard Settings dialog does exactly this. It allows for standard navigation during a say all and adjusting the flow of the say all accordingly. When it comes to sentence navigation, this has been discussed elsewhere. bhirmanpour's request to set a dedicated speech rate for say alls may depend on the speech refactor that is being worked on for NVDA, and ideally, should be covered by a separate ticket. All in all, a portion of this ticket is already achievable, a portion is blocked by another ticket's implementation, and a portion duplicates another ticket. Thus, I suggest closing (and providing the numbers for related tickets for reference purposes). @ehollig

The Allow skim reading during say all' option will allow you to move up and down by paragraphs during say all. I just tested this functionality on this page after indicating a say all.
Dedicated speech rate for say all can be achieved using profiles.
For sentence movement in browse mode, this is #5463.
For other applications or supporting the moving by sentence natively by NVDA, this is covered in #1873.
Closing