{only available when compiled with GUI enabled on macOS} This option only has an effect in the GUI version of Vim on macOS v10.2 or later. When on, Vim will use smooth ("antialiased") fonts, which can be easier to read at certain sizes on certain displays. Setting this option can sometimes cause problems if 'guifont' is set to its default (empty string). NOTE: This option is reset when 'compatible' is set.