I want to add the heading category also. I have gone through the files in pical and know where to add the required code. But i m not able to find the code which will fetch the name of the category.

What i mean is that under the heading submitter the code to display the name of submitter is $event.submitter_info, for summary is $event.summary

in the same way i want the code that will display the appropriate category under the category heading.

Kindly let me know how to do this. 

'catname' => $this->text_sanitizer_for_show( $this->categories[ intval( $event->categories ) ]->cat_title ) ,

<{$event.catname}>