Displays post-publication revisions along with differences/changes from current revision on single post views.
the_contentwas called. This version closes that loophole.
<col class="content">. Let's rename it to get:
<col class="diff-content">. (This class isn't used in the example CSS, and you likely won't need to do anything with it.)
prd_set_manual_mode()is deprecated (no longer needed now that there is a manual mode checkbox option), and
the_revision_diffs_prdis also deprecated.
wp_text_difffunction. (Requires some styling with CSS to qualify as "better.")