I think DHer is on the right track.
Anyway look at the inclosed picture of the html transformation. No margins.
This file has a border line left and right - so I get small "margins" on left and right. Font may be scaled. Top and bottem lines are cut. The cut lines can be read on previous and next page. So a part of the content shows up twice. With exact page turns and included embedded pictures this format would be perfect?!
