Allows use of something like <hr id="system-readmore" /> tag in YOOTheme PRO Page Builder articles.
Use <hr class="yoopro-content-readmore" /> instead, inside YOOTheme Content Builder
If you want to hide some section when in context "com_content.article" (single article view), inside Content Builder add class 'yoopro-content-hide'.
Please remember to enable pluing once installed.