# Fill Modes These constants determine how the timed object behaves once its active duration has completed. They are used with the [`fillMode`](/documentation/QuartzCore/CAMediaTiming/fillMode) property. ## Topics ### Constants [`removed`](/documentation/QuartzCore/CAMediaTimingFillMode/removed) The receiver is removed from the presentation when the animation is completed. [`forwards`](/documentation/QuartzCore/CAMediaTimingFillMode/forwards) The receiver remains visible in its final state when the animation is completed. [`backwards`](/documentation/QuartzCore/CAMediaTimingFillMode/backwards) The receiver clamps values before zero to zero when the animation is completed. [`both`](/documentation/QuartzCore/CAMediaTimingFillMode/both) The receiver clamps values at both ends of the object’s time space ### Constants [`removed`](/documentation/QuartzCore/CAMediaTimingFillMode/removed) The receiver is removed from the presentation when the animation is completed. [`forwards`](/documentation/QuartzCore/CAMediaTimingFillMode/forwards) The receiver remains visible in its final state when the animation is completed. [`backwards`](/documentation/QuartzCore/CAMediaTimingFillMode/backwards) The receiver clamps values before zero to zero when the animation is completed. [`both`](/documentation/QuartzCore/CAMediaTimingFillMode/both) The receiver clamps values at both ends of the object’s time space [kCAFillModeFrozen](/documentation/QuartzCore/kcafillmodefrozen) The mode was deprecated before OS X v10.5 shipped. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)