I am using Eclipse Europa version 3.3.2 with all the required plugins. I installed Backbase Eclipse plugin through Help->Software updates->Find and Install... (the 'proper' way). After restart, it shows that the plugin has been installed correctly and I can see Backbase menu on the top menu bar.

I cannot get the plugin to work with the existing ("non-Backbase") project. I have got a PHP project (based on Zend Framework) and I would like to make use of Backbase code completion in it. It works in e.g. HTML/XML files, but not in PHP and PHTML files, which is where I need it. It does not even work if I (temporarily) rename a PHTML file to HTML.

How to make Backbase code completion work in PHP/PHTML files? Can I edit contents of JAR files (of course after unzipping)?