Abstract: A method, system, and program product for collaborative operations on a data structure. The system includes a server and a plurality of clients connected to the server. In one embodiment, the server is configured and controlled for Document Object Model access to and manipulation of mark-up language files. The client is configured and controlled to operate on data structures on a remote work station; invoke a container for the changes to the data structure; encapsulate the operations on the data structure into the container; and send the encapsulated changes to the server. The server is configured and controlled to enter the changes in the data structure, for example, in accordance with the Document Object Model; and to reflect the entered changes to other clients connected to the server.