Smear is when an animation leaves a "trail" behind that makes the image stretch from their previous position. This is a trick widely used in animation that makes it feel much more natural.

Without SmearWith Smear


PrecisionThe precision of the smear trail. Low precision will make the trail be more noticeable.
TrailHow long the smear trail will be.
InlineIf the image has an outline, setting an inline value bigger than the outline will make the smear only use the inside part of the image.
Render ModeDefines where the trail is created. The options are Front and Back.
ColorDefines the color of the trail.
AmountThe amount of color applied to the trail.