If you want to change the format of trackbacks (pings), say, to remove everything apart from the originating title and link, then you’ll need to add a couple of functions. You may want to do this if the date of the trackback isn’t important, or you don’t want snippets of content from other people’s sites in your comments section, but do want a link to it.
The PHP Code
Open up the functions.php file in your child theme and add the following code. The code should be entered at the end of the file, just before the closing ?> if there is one.
Explanation of the PHP Code
There three stages to our code above. The first is to add a filter into a Genesis function that allows us to specify an extra argument to the native WordPress function wp_list_comments().
The second is a small function that takes all the existing arguments that are being passed in to wp_list_comments() and adds one more to it. This extra value is a reference to a callback function, and it’s the function WordPress uses to actually build the markup that produces the trackback entries.
Finally, the callback function itself, and it’s here that you may want to add your own customisations. The code above strips away most details about the ping, and just leaves a link to the source of the ping, with the source title as the displayed text.