I'm working on a book layout and I need a way to create an anchored text box that has a thicker border on the page edge, sort of like this:
I've looked at the border options and there doesn't seem to be a way to set an edge border relative to the spine, so I thought about just creating a rectangle shape and anchoring it to the text box, which is then anchored to the main text. This works, but the height of the rectangle doesn't match the text box unless I manually set it. I have many of these anchored text boxes so in a perfect world I'd be able to set the border in a paragraph style or something, but if I'm going to have to go through and anchor a rectangle to every single one and manually make the height match then so be it. But if anyone can think of a better way that'd be helpful!