If I remember right, there used to be an edit button on the schematic. The schematic html section says there is one. I can't find it, I remember it being next to the simulate this circuit link.
<!-- Begin schematic: In order to preserve an editable schematic, please don't edit this section directly. Click the "edit" link below the image in the preview instead. --> ![schematic](http://i.stack.imgur.com/[not relavant].png) <!-- End schematic -->
Anyway, one needs to change or the other, we shouldn't tell people something is there when it is not.