AARGH! I can't get the text / content editor to do what I want.
/Although LayoutEngine (the Squarespace drag & drop content editor) is powerful, the darned thing can be fiddly to use, too. Especially when it comes to Text Blocks.
I always insert a Line Block whenever I want to split text blocks and move things around. Then, when I'm done moving stuff, I just delete the Line Block.