Comment 4 for bug 660420

Paul, you do realise that you simply have not got enough space to show double-storey characters such as 'a' and 'e' correctly at 4pixel x-height. They will show up as a black blob. At 5pixels cap height is sufficient, yes, but the problem the exists how you show the 'i' which requires at least 7px, based on 5px x-height. So, at least 7px cap and 5px x-height, with 2px descender (for the 'g').