temporal aspects of 'X development' terms

[J Clark]

> As for the vascular question, I think that Jen has hit this one 
> correctly, since the system development term is new, I think that we 
> just haven't moved vasculature development to the right place yet. Can 
> you think of components of the vascular system that are not considered 
> vasculature?

I'll make a sourceforge item on this and we can carry it on offlist.

Jen