あげく -> 挙げ句 originally referred to the end of a renga poem. Since renga poems are notoriously long, if you're at the last line of a renga poem it implies you went through a long process to get there.
Am I the only one who doesn't understand what these green boxes are for? Also for some reason, the right hand side of the text box within the green one sticks out a bit too far and looks a little funny.
They were only supposed to show up for a couple users. You know how many of the constructions (but not all) have links you can click on where they give actual examples of that usage? (show construction examples).
Currently, every grammar point uses the same set of words - if it's a noun, it's going to use a preset group of words, even if that word doesn't fit into the meaning of the grammar point. Those forms are for adding words to each individual construction so that the construction examples make sense semantically.
