I've been on Blogger for eight freaking years and I just discovered (like, 15 minutes ago) what this icon is for.
|Ako na ang technoidiot.|
Apparently, it's been there for three years. "Jump breaks ONLY work on posts displayed on the Homepage and not PAGES," according to some genius in Google's product forum. And why on earth do I need to seek further assistance when I'm using a WYSIWYG editor?!?! LOL.