Yes Action sets and Action within sets. Action names are unique in sets but not between sets. For example: All loaded action sets could have an "action 1" and each "Action 1" action could do something different. So you need to identify both the Action Set name as well as the Action Name. To address a particular action. However loaded Action set name do not have to be unique and action sets can be loaded for m anywhere. So enev with Action set name, Action name there cam be duplicates that do different things. Or be different versions of an action.