document .h1 thru .h6; fixes part of 10102
document .h1 thru .h6; fixes part of 10102

BS3 commits: a8afb4668802aaba50ca90e5862d91a750d90dc6

todc/todc-bootstrap,ztx1491/todc-bootstrap,todc/todc-bootstrap,aaroncnhk/todc-bootstrap,up2vs/todc-bootstrap,2947721120/googlebt4,mozillo/todc-bootstrap,2947721120/todc-bootstrap,todc/todc-bootstrap