Systems and methods for anchoring content objects to structured documents

A method comprising:

• in connection with rendering a target structured document by a first client application executing within a first client computing device, determining, by a second client application at the first client computing device, if the target structured document is associated with a content object, and, if the target structured document is associated with a content object:
• accessing, by the second client application, a representation of the target structured document at the first client computing device, the representation comprising a plurality of nodes each logically arranged in one of a plurality of levels that together logically form a hierarchical tree;
• accessing, by the second client application, a data store located remotely from the first client computing device, the data store storing one or more content objects, each content object comprising corresponding content and a set of one or more anchor point definitions;
• identifying, by the second client application, one or more of the content objects that are each associated with the target structured document based on their corresponding sets of anchor point definitions;
• and for each of the one or more content objects identified as being associated with the target structured document:
• accessing, by the second client application, the content and anchor point definitions corresponding to the content object;
• analyzing, by the second client application, the corresponding set of anchor point definitions;
• determining, by the second client application, a target node from the plurality of nodes based on the corresponding set of anchor point definitions;
• and using the determined target nodes to locate where the content corresponding to the content object is to be rendered as an overlay to the target structured document at a predetermined position relative to target content defined by the target node based on the corresponding set of anchor point definitions