GtkGlArea - Newbie Question

[Rob Wilkens <robw optonline net>]

Greetings,

I'm just getting my feet wet in both GTK programming, X-Windows
programming, and OpenGL programming.  I'm not sure how serious I'll get
involved in the above.

Someone had mentioned to me the existence of a Gtk widget called
GtkGlArea which I was only able to find some passing references to on
google. I downloaded the Gtk+ docs, and could not find reference to it
there.  

I must say that it's a disservice to the gtk community that there is not
a search tool on the www.gtk.org web site.  No, I'm not volunteering to
do it, but I just think it would make finding relevant documentation
that much easier.

Anyway, is GtkGlWidet a standard widget that I can drop into my GlApp
like any other object that I can pack into an hbox/vbox, for example? 
Is it relatively simple to program/customize?  Does it take advantage of
GLX hardware accelleration?  Does it even actually exist or does it's
lack of mention in the docs (i did a "grep -ir gtkglarea" in the
unpacked gtk+ docs with nothing found) imply that it was a figment of
someone's imagination, or otherwise a third party tool.

Where can I find API references on it?

Thanks in advance for any answers.

-Rob

p.s. I'd ask again where I was originally told about it, but it's more
on topic to ask here, than there.  So, I figure rather than getting off
topic there again, I'll stay on topic with this here.  Hope you don't
mind this relatively simple question.