Hi,

I was trying to configure the above variable for some overlay
environments in org-beamer. I saw a few of the default environments use
the %x format but I couldn't find any documentation about what it does.
From the exported latex file it seems a \label{somelabel} tag is
inserted. Attached is a patch including this information in the
docstring.

-- 
Suvayu

Open source is the future. It sets us free.