V4REV update -- remove dialog CLOSE BEFORE.

[Robert Brenstein]

>Hmm, I would disagree about the user-friendliness.  The examples 
>currently contain a table of contents.  When I click on a table of 
>contents I expect to navigate from what I am currently viewing to 
>the new topic I clicked on.  Right now I have two extra steps - 1) 
>Close the example I am currently looking at and 2) click the table 
>of contents again.  In my mind that is less user-friendly.
>
>In the end this isn't a big deal and perhaps just personal preference.

Well, yes, it is personal preference to some degree.

Of course, if you are not aware of this behavior, it may be quite 
disconcerting to have a few windows suddenly close. Even when aware, 
I may inadvertly try to open a new example before being really done 
with the one showing up.

We should actually be able to open multiple examples at the same 
time. Then this issue is moot. In real applications, I must be able 
to do such a thing, so examples might as well test it out.

Robert