A horizontal alignment of inline areas (glyphs and graphics). The maximum-line-rectangle wraps all the glyph areas, the nominal-requested-line-rectangle wraps the glyph areas of the first three glyphs (which use the nominal font). The alignment baseline is shown, splitting the n-r-l-r horizontally. The text-altitude is the vertical distance between the baseline and the top of the n-r-l-r, and the text-depth is the distance between the baseline and the bottom of the n-r-l-r.