Hi Karen,
Speech rate can be adjusted with vo-cmd-arrow keys, left and right until you 
reach rate and up and down to adjust.  As for drawbacks with quicknav or 
locking the VO cursor, quicknav generally won't impact anything else, though 
you'll want to be careful in the event you ever do actually want to move the 
physical cursor around with arrow keys.  Locking the VO keys will impact a lot 
more, and I don't personally recommend it.  I have an MBP and just get used to 
hitting VO-z with my left hand.
Best,
Zack.
On Jul 4, 2011, at 12:08 PM, Karen Lewellen wrote:

> Thanks on both counts.  Any draw back to locking down  those keys, or using 
> quicknav?  does it impact your using anything else say on the web
> Oh and one more so I need not start another thread.  adjusting the speech 
> rate?
> Thanks,
> Karen
> 
> On Mon, 4 Jul 2011, Mark BurningHawk Baxter wrote:
> 
>> The VO keys are on the left side of the keyboard, and can be locked down 
>> with VO semicolon and unlocked by toggling that keystroke.  This is because 
>> the right option key is used as the modifier to trigger keyboard commander 
>> shortcuts.  also, if you're just cursoring around a lot, you can turn on 
>> quicknav by pressing both left and right arrows simultaneously; this lets 
>> the arrows work as VO navigation so you don't have to hold down those two 
>> keys which, I admit, is a drag in the bag.
>> 
>> • Mark BurningHawk Baxter
>> • AIM, Skype and Twitter:  BurningHawk1969
>> • MSN:  [email protected]
>> • My home page:
>> • http://MarkBurningHawk.net/
>> 
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