User Guide

Glyph Window
273
Vertical Preview
If the width of the preview panel is less than half of its height (which
happens if you dock the preview panel to the right or left side of the
FontLab window), it automatically turns itself into vertical preview mode:
A font’s vertical metrics or glyph’s vertical metrics (if
defined) are used to vertically align glyphs. Right-to left
preview mode still works when the Preview panel is
vertically oriented, so you can align glyphs to the left or
to the right to check the balance of their sidebearings.