JLM is an advanced LaTeX mode for Jed <http://www.jedsoft.org>. Its aim is to
help the user by taking over annoying and stupid things they need to be done,
like add a \usepackage when you add a command or environment from this package
or put dollar signs around mathematical commands and move the cursor to an
appropriate point.

JLM does not think for you. If you want a tabular, but insert an itemize, JLM
doesn't prevent this. So, you should be familiar with LaTeX and know what
environments and commands are and where to place them in a document—JLM helps
writing them.

You can get the newest development version via SVN from

   https://svn.lug-jena.de/repos/public/jjm