manual/src/main/theme/apache-theme.yml (5 lines):
	- line 66: # FIXME vertical_rhythm is weird; we should think in terms of ems
	- line 134: # FIXME perhaps set line_height instead of / in addition to margins?
	- line 170: # FIXME disable negative padding bottom once margin collapsing is implemented
	- line 197: # FIXME reenable padding bottom once margin collapsing is implemented
	- line 209: # FIXME reenable padding bottom once margin collapsing is implemented