LOSSLESS FORMAT-DEPENDENT ANALYSIS AND MODIFICATION OF MULTI-DOCUMENT E-LEARNING RESOURCES

Content stored in a plurality of electronic files that belong to a course of learning resources is read. An object-oriented representation of structures of the content is generated, where the representation includes objects that represent portions of the content, and a semantic content model of the content is generated based on the object-oriented representation of the content. Instructions to modify the content are received and the object-oriented representation of the structures of the content is modified in response to the instructions from the user. In response to the modified object-oriented representation of structures of the content the content is modified.