Things I have to remember:

• When @corresp is used to bracket multiple morpheme components for a single segment, the site needs to handle this. When you first click on the segment, it should expand into separate morpheme representations; then clicking on each of those should take you into the morpheme.
• <bibl> elements need to be applied in many different locations, especially inside <def> and <form>, to make it absolutely clear what the source for each of them is. Right now, a <bibl> tends to appear in a <def>, and that actually means that it applies not only to the <def>'s parent <sense> element, but also to the preceding sibling <form> element. Since this is not reliably the case, though, we need to be explicit about it.