Provides methods, apparatus, and systems for computer aided authoring. Included are: a method for browsing an electronic document, an apparatus for aided authoring, an electronic document browser, a method for retrieving an electronic document, a system for retrieving electronic documents, a method for subscribing and publishing an electronic document as well as a system for subscribing and publishing electronic documents. An example method for computer aided authoring includes: generating one or more topic summaries based on an electronic document while a writer is writing said electronic document, wherein the reliability of the topic summary is ensured by the writer; and saving said topic summary information in correspondence with said electronic document.