Wow, I can’t believe I had not heard of this. I would love to review the code 
though I am trying right now to figure out how to manage a couple of things in 
NVDA. 

So in terms of VI and VoiceOver the move by word commands are the most verbose. 
And of course the OV movement does not effect the actual cursor position. 
curses is a the default library set used by UNIX systems to enable full 
positioning of text and cursor throughout the terminal screen. I believe it 
also has functions to change text colors. This library package was very 
important in the early days of UNIX when most interaction with the Operating 
System was via dumb terminal.

If you were on a terminal that did not have the ability to move the insertion 
to the top (or at least UNIX’s curses library did not know how to do this), 
then you could either use the EX editor which is essentially the commands that 
vi uses at the : or you could use vi in non-curses mode. In this mode any 
change is written out to the screen one line at a time. I would expect there is 
a way to specify doing this with vim, or the easiest way I used to do this was 
by setting the TERM environment variable to dumb. 

HTH,

Jonathan Cohn   
> On Feb 22, 2018, at 2:33 PM, James AUSTIN <james.londons...@gmail.com> wrote:
> 
> Oh and to answer your final question, it as more of a query as i would really 
> like to use VIM for writing as I find that I am spending more and more time 
> in the Terminal across all three OS's.
> 
> Best wishes
> James 
> 
>> On 21 Feb 2018, at 15:30, Jonathan Cohn <jon.c.c...@gmail.com> wrote:
>> 
>> I have used vi on Macintosh with Terminal and VO. I am pretty sure that the 
>> VI on Mac is just a link to VIM. There was a little weirdness with cursor 
>> positioning, but I could certainly get things done. That being said, I used 
>> VI with screen enlargement software in non curses mode when I started 
>> needing 36pt fonts, so I needed to know all the ex/vi commands in order to 
>> get things done. For example, I don’t use arrow keys with VI and understand 
>> how to do things at the : prompt.
>> 
>> What is the second screen reader you mention in your question? Also, where 
>> are you running into difficulties?
>> 
>> 
>> Thanks,
>> Jonathan
>> 
>>> On Feb 21, 2018, at 7:44 AM, James AUSTIN <james.londons...@gmail.com> 
>>> wrote:
>>> 
>>> Hi folks,
>>> 
>>> Is anyone successfully using VIM with either VO or TDSR please? If so, 
>>> could they please provide some instructions as my setup is failing 
>>> miserably.
>>> 
>>> Thanks
>>> My best wishes
>>> James 
>>> 
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