http://www.w3.org/TR/css3-gcpm/#bookmark-target
Heading-1 [#h1]
Heading-2 #1 [#h201]
Heading-3 #1 [#h301]
Heading-3 #2 [#h302]
Heading-3 #3 [#h303]
Paragraph #1 [#p01]
Heading-2 #2 [#h202]
Heading-3 #4 [#h304]
Heading-3 #5 [#h305]
Heading-3 #6 [#h306]
Paragraph #2 [#p02]