Patent attributes
An apparatus and a method of verifying a simultaneous edit match for a markup language-based document according to the present invention simultaneously apply a predetermined edit command set to a markup language-based document through simultaneous edit sessions, compare tags of the markup language-based documents, which are completely edited in respective edit sessions, and determine whether the tags of both documents are matched to each other, to assist a developer to determine whether a currently operated simultaneous edit support algorithm of a document normally supports a simultaneous edit according to edit commands included in the corresponding edit command set.