Abstract: A network client configured to operate within a data processing system and to receive content from a remote server system to facilitate a windowed content manifestation environment. The network client includes and involves a content retrieval module configured to receive content from a network server system via an electronic data network, and a processing engine coupled to the content retrieval module configured to operate a content manifestation environment within the data processing system, and to process the content to produce at least one window object within the content manifestation environment. The window object is configured to manifest at least a portion of the content therein. The window object corresponds to at least one executable program object and is controlled by the processing engine without requiring the content manifestation environment to be refreshed.