[AUCTeX] replace environment

[Tamas K Papp]

Hi,

I wonder if AUCTeX has the functionality described below, I looked in
the docs but didn't find anything like this.

Imagine that I am editing something inside an environment, eg

\begin{equation*}
  really long equation...
\end{equation*}

but suddenly realize that I would be happier with a different
environment instead, eg

\begin{multline*}
  really long equation...
\end{multline*}

Of course I can always replace by hand, or restrict the region and do
a replace on that etc, but doing this quickly would be handy.  Is is
possible?

Thanks,

Tamas