Taken from bitmap-font-patcher's output and manually tweaked in gbdfed:
* For all icons, I expanded them to occupy the maximum available space.
* For the fork icon ( U+E0A0), I made the branch larger than the trunk.
* For the newline icon ( U+E0A1), I made the "N" at the bottom larger.
* For the padlock icon ( U+E0A2), I replaced the keyhole with // lines.