What's the difference between the filled and empty keyframe types?

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By jeff.davies - 2 Years Ago
I notice during my animations  that some keyframes are filled and some are empty. 20 minutes of googling did not yield any answers to their differences. Can anyone enlighten me? Thanks in  advance!
- Jeff
By 4u2ges - 2 Years Ago
There are more limbs in a set than it is shown on the timeline  (LLeg example comprised from Thigh and Calf)
When one or more of the limbs in a set are not assigned a value for particular keyframe, that keyframe is hallow.
Otherwise it is solid.

Here is explanation with Curve Editor


By jeff.davies - 2 Years Ago
Thank you for the quick response and clarification!