Question

define term key frame in synfig ​

Answer 1

Answer:

A keyframe is a basically a "mark" in the timeline. This mark allows the user to make Synfig remember the state of the animation at that point (frame). ... It also indicates that the marked frame is a special frame where the information of every parameter of every layer is stored in order to be reused later.

Explanation:

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Answer 2

Answer:

A keyframe is a basically a "mark" in the timeline. This mark allows the user to make Synfig remember the state of the animation at that point (frame). It means that the keyframe is like a label that tell Synfig that this frame should be taken into account when creating waypoints.