Visibility flags have been included for your reference to use during training. As output we request that you include confidence scores which we may use for further analysis in the following challenge paper. However, these are not required; you may insert a placeholder in the output format instead. For evaluation only visible (flag = 2) keypoints in the ground truth will be considered. To verify the required outputs per task, please refer to the [Tasks wiki page](https://www.synapse.org/Synapse:syn66256386/wiki/631726) Clarifications to the keypoints and visibility flags can be found on the [Data wiki page](https://www.synapse.org/Synapse:syn66256386/wiki/631728)