We have developed the TorXakis.xml plugin for Notepad++. This plugin only provides syntax highlighting.
Download the plugin at TorXakis.xml.
We will refer to the downloaded file as 'TorXakis.xml'.
In Notepad++ choose Language > Define Your Language...
In User Defined Language window Click "Import..." button.
Select the downloaded file 'TorXakis.xml'. Click on OK on the "Import successful." pop-up window.
In Notepad++ choose Language > Define Your Language...
See section Installation above for a screenshot.
In User Defined Language window at "User language :" select TorXakis
In the "Remove the current language" pop-up window, answer the question "Are you sure?" by clicking "Yes".