Hi,
Speaking English is completely fine. One way to do this would be to create a custom style and add your own Javascript: see https://forja.cenatic.es/plugins/mediawiki/wiki/iteexe/index.php/Styles and look at the existing styles for examples.
To be honest what I have sometimes done is change the files after exporting them from eXe. There is a command called exe_do that can be used to run an export from the command line: so you could for example have a script that exports the ELP file and then adds your own custom javascript etc.
Of course for SCORM you need to use the SCORM quiz iDevice; the others will not themselves talk SCORM. Unless you mean you want to use your own script triggered at the end of a page to send SCORM statements.
Hope that helps.
-Mike