So I'm starting to get a lot of PDFs that have multiple layers, that is, different levels of text and pictures which can be turned on and off. The main benefit is that you can turn off, say, the pictures layer to make a document more printer friendly. However, there are a few PDFs I've gotten that just look like a big mess with all the layers turned on. There's a little annotation in the PDFs I've seen like this that say that there are layers in the document, so I know it's not a bad PDF. Adobe Reader can handle these layers, but I can't seem to find a way to get Apple Preview (Leopard version) to acknowledge it or to find a way to turn them on and off. Is there any way to get it to do so? Are there any plans in the future to support it? Or am I stuck using Adobe for those?