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Good explanation for Down/Up arrow behavior in JAWS and NVDA?

for

From: Robert Fentress
Date: Sep 21, 2015 9:45AM

I'm trying to write a tutorial that explains the differences between
JAWS and NVDA and am having a difficult time describing in a clear and
accurate way why they behave the way they do when using the Up and
Down Arrow keys. For instance, right now, I'm saying that they will
each read "something like" a line of text (content?) and that that
line of text tends to be longer in JAWS than in NVDA. I'm already
explaining that holding down the control key will read an entire
"block of text" (better phrase?). Can anybody point me to something
that describes more precisely what is actually going on here?

Thanks,
Rob

--
Robert Fentress
Senior Accessibility Solutions Designer
540.231.1255

Technology-enhanced Learning & Online Strategies
Assistive Technologies
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