A node is an overall term for an item of content or a folder. API methods are available to
work with a node's comments, tags, and ratings.
CommentsA person can comment on folders and individual items to give other users information or notes specific to that content. API methods exist to get a list of comments, get a specific comment, and add a comment to a node.
Any item of Alfresco content can be tagged. API methods exist to return a list of tags for a specific node and to add a tag to a node.
RatingsA person can rate an item of content by liking it. They can also remove their like of an item of content. API methods exist to get a list of ratings and to add a new rating.