Hello, everyone. The specification reads https://w3c.github.io/web-animations/#animation-node-start-time
The start time of an animation node is the moment in inherited timewhen the animation node is scheduled to begin. In the absence of animation groups,the start time is always zero.
Since animation groups are moved to level 2, it is necessary to remove reference to them here. After that we will have: animation node start time is always zero. So start time becomes a constant. I think there is not much sense in such constant. I suggest to move the start time property to level 2. In addition I'd like to note, that figure 5 in chapter '3.6.4. Local time and inherited time' ( https://w3c.github.io/web-animations/#local-time-and-inherited-time ) shows the animation nodes with start time equal to 1. I think, there should not be be such examples in the level 1 specification, which define animation node start time as 'always zero', Thanks, Aleksei.
