Loading editor on custom page doesn't load all modules

Question

I'm using code like this to display the default editor on a custom page : 

 

$editorname=isset($in['editor']) ? $in['editor'] : qa_opt('editor_for_qs');

$editor=qa_load_editor(@$in['content'], @$in['format'], $editorname);

 

Unfortunately, it appears that the plugin is not fully loaded - only the file implementing the 'calc_quality' function appears to be loaded.

 

For the record, I'm using the Markdown Editor.