missing indentation in generated bookmarks at least for chrome

[Fred T. Hamster]

the bookmarks in chrome at least are not indented at all.
the sizes change per subsection still, but that's not enough structure for the eye to use.

we used to have a nice indentation scheme. maybe that was dropped?

try in firefox; do we still see indents there?

if missing, we can try an exponentially dropping off indent style, so the later sections only get indented like 1 character, to avoid infinite regress and a march of the text across to the right margin.