MARKUP SYSTEM FOR SHARED HTML DOCUMENTS

A shared markup system and a method are provided for supporting Web co-browsing. Based on the hyper-text markup language (HTML), the markup system is interoperable across different platforms and Web browsers and provides for online annotation, of shared HTML documents, directly within the browser's windows. The annotations created by the markup system are realized using HTML components that are composed dynamically. Synchronization and control of the browser's environment are also provided to achieve uniform participants' views.