labelAtom - how is it used?

Hi All
1- Is there an example of how labelAtoms is used in JCasC ?
2- Is there a web UI component on Jenkins that corresponds to labelAtom(s) ?

Thank you

Visit .../label/<label>/ to get to the UI of the label. The url also accepts label expressions e.g. .../label/label1&&label2/ but those are not configurable.
What you can configure there are the properties of labels, there are only 2 plugins implementing such properties I think:

The config of labelAtoms is saved under JENKINS_HOME/labels/<label>.xml

It seems that the description of labels is not configurable via JCasC

See also Loading... where the addition of labelAtoms to CasC was requested

thx Markus - will update after looking through your suggestions