1. In a computer system having a browser for retrieving information from servers across a remote connection, said information including content and tag-based commands, said tag-based commands affecting display of content at the browser, the tag-based commands each being associated with at least one tag for identifying a particular command, an improved method for processing content and tag-based commands by selectively trapping commands, the method comprising: receiving at the browser user-configurable settings indicating how particular types of tag-based command are to be processed by the browser; receiving a user request at the browser for retrieval of information of interest from a particular server; in response to said request, sending a fetch request from the browser to the particular server, for retrieving said information of interest; in response to said fetch request, receiving at the browser a stream of information from the particular server, said stream of information including tag-based commands; and selectively trapping each command as each command is received in said stream of information, by performing substeps of: (i) identifying the command by type, and (ii) based on the identified type for the command, processing the command according to said user-configurable settings by performing a selected one of modifying the command, deleting the command, replacing the command with a new command, or passing the command through to the browser unchanged.