DOCUMENT EDITING METHOD

A method of editing a document includes receiving data associated with the document, the data including mark-up language data. The received data is processed to render at least part of the document for display in a first display area, and the at least part of the document is displayed as rendered in the first display area. The received data is processed to render the at least part of the document for display in a second display area, and the at least part of the document is displayed as rendered in the second display area. Editing data is received and is processed, thereby editing the at least part of the document displayed in the second display area, and the editing is applied to the at least part of the document displayed in the first display area.