9. A system for allowing an operator to update a functionality characteristic of an interactive television program guide implemented on a user television equipment, the system comprising: an operator server for remotely supplying a markup language document to the interactive television program guide implemented on the user television equipment; and a client processor for i) updating the functionality characteristic of the interactive television program guide based on the markup language document, and ii) for generating a program guide display screen on the user television equipment having the functionality characteristic of the interactive television program guide as updated based on the markup language document.
9. A system for allowing an operator to update a functionality characteristic of an interactive television program guide implemented on a user television equipment, the system comprising: an operator server for remotely supplying a markup language document to the interactive television program guide implemented on the user television equipment; and a client processor for i) updating the functionality characteristic of the interactive television program guide based on the markup language document, and ii) for generating a program guide display screen on the user television equipment having the functionality characteristic of the interactive television program guide as updated based on the markup language document. 10. The system of claim 9 wherein the program guide display screen comprises a display element that executes the updated functionality characteristic of the program guide in response to user input.