I've had a bit of practice playing with the V3 API now and feel like I can 
do or figure out most of the stuff that I need to do. However, there is one 
very basic thing that is eluding me: how is the end user supposed to know 
what to do with the controls provided by the DefaultUI, let alone any custom 
controls that might get added?

I haven't been able to find anything like a Help option on the DefaultUI 
that a user new to Google Maps could click to find out what the various 
controls actually do. I can well imagine a great many users, especially 
those who aren't very computer-savvy, just ignoring the controls as some 
kind of imponderable mystery. People like that would never realize that they 
can move the map by dragging with their mouse, click to zoom in, right-click 
to zoom out, change the orientation, switch to StreetView, etc. etc. In 
other words, I have to believe that many users would think that they have no 
ability to interact with the map to make it more useful to them. 

I realize that I could create my own custom control that would essentially 
be a Help button which the user could click to bring up verbiage explaining 
what options he has for working with the map. But I can't be the first 
person to make the realization that the controls aren't documented. In fact, 
I have a nagging suspicion that there must be a standard set of 
documentation for the controls which users can invoke very easily if that 
feature is just turned on. The problem is that I haven't yet found any such 
thing in the V3 API documentation. 

I'm sure many of you on this forum have far broader experience with Google 
maps than I do. What are you folks doing so that your least experienced 
end-users can easily discover what they can do with their mouse and/or the 
controls on the DefaultUI?

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