A Boolean value indicating whether all glyphs in the font have the same advancement.
- macOS 10.0+
The value of this property is
true when all glyphs have the same advancement or
false when they do not. Some Japanese fonts encoded with the scheme “EUC12-NJE-CFEncoding” return that they have the same advancement, but actually encode glyphs with one of two advancements, for historical compatibility. You may need to handle such fonts specially for some applications.