13.1.2.2 Enlarging the bitmap

You can enlarge the bitmap on all four sides by clicking on the `Expand' button; i.e., this adds one blank row at the top and bottom, and one blank column at the left and right. This is useful when you need to fill out a truncated curve, lengthen a stem or serif, etc.

XBfe correspondingly changes the side bearings and baseline position so that the origin of the character does not change. In other words, the new row at the bottom is below the baseline, and the new columns are in what was the side bearing space. You can change the baselines with Fontconvert (see section 8.1.3 Character manipulation options, and the side bearings with Charspace (see section 9. Charspace).