Codeeditor_XH provides a replacement for the simple textarea in CMSimple_XH's back-end to edit the template, the stylesheet and the plugin stylesheets. Furthermore it can be used to edit the content of the website.
Instead of being a WYSIWYG or WYSIWYM editor, it allows to edit the source code directly, and offers syntax highlighting, line numbering, code indenting and folding, bracket matching, optional line wrapping, filebrowser integration and search and replace.
It requires CMSimple_XH ≥ 1.6 and PHP ≥ 5.2.0. It is released under GPLv3.
The changes are listed in the changelog. For further details you can read the manual online.
If you have already installed at least version 1.0, you can download and install the patch. This won't overwrite any config, language or css files.