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# enable variation font support
defaults pref(layout.css.font-variations.enabled,true)
== font-optical-sizing-1.html font-optical-sizing-1-ref.html
# We're not running recent enough Windows7/macOS versions in CI yet, so this will fail until they are updated.
!= font-optical-sizing-1.html font-optical-sizing-1-notref.html
# reset the default preferences
defaults