Tween type

This lets you apply a predefined easing effect to the animation. The first drop-down list contains the type of the effect and the second one specifies when it is applied (in - at the beginning, out - at the end, mix - both at the beginning and at the end).

• quad - slowing down (with "in" - a slow start)
• cubic - the same as the previous one, but stronger
• quart - the same as the previous one, but stronger
• quint - the same as the previous one, but stronger
• sine - the same as quad
• expo - the same as quint
• circ - something between cubic and quart
• elastic - bounces twice in the opposite direction
• back - bounces once in the opposite direction
• bounce - bounces twice in the forward direction

For "elastic" you can additionally use the keywords "amplitude" (float) and "period" (float). For "back" you can use "overshoot" (float). Examples:

• elastic amplitude 0.5 period 1.3
• elastic amplitude 25
• back overshoot 10.45

You can see examples of these effects at easings.net.