How to edit .thtml theme files
From JReviews Documentation
JReviews themes use .thtml files which are "php + html" template files. To modify .thtml files, you need a text editor. Any text editor like notepad would work, but it's better to use more powerful code editors with syntax highlighting and other features.
Some of the popular code editors
- Notepad++ (Windows) - free
- TextWrangler (Mac) - free
- jEdit (Windows, Linux, Mac) - free
- Sublime Text (Windows, Linux, Mac) - commercial
Most of the code editors will display .thtml files as regular text, without syntax highlighting by default, but in each of them you can enable PHP highlighting for .thtml files.