Abstract: Systems and methods are disclosed for comparing annotations in files to show changes in the annotations at a granular level. In one implementation, a system receives a first file and a second file for comparison. The system determines the annotation ranges for each annotation in the first file and the annotation range for each annotation in the second file. The system then determines the annotations from the first file that overlap with annotations from the second file and compares annotations that overlap. The system then incorporates the comparison of the annotations into a main comparison file. In certain implementations, the system uses an index to determine what annotations overlap. In other implementations, matched pairs are created from overlapping annotations.

Abstract: Systems and methods are disclosed for creating an electronic communication digest. In one implementation, a system receives a first electronic communication including first content, and generates an electronic communication digest that reflects the first electronic communication by including first digest content generated based on the first content. The system receives a second electronic communication that includes second content, and determines a repeated portion of the second content that is included in the first content and a unique portion of the second content that is unique to the first content. The system also update the electronic communication digest to reflect the second electronic communication by adding second digest content generated that includes the unique portion of the content and does not include the repeated portion of the second content.

Abstract: A computer software product for allowing simultaneous multi-level collaboration, including in real time between an author and a group of reviewers invited by the author to comment on a document stored in a computer file. The computer software enables each reviewer to view the document and make changes thereto which are stored in a secondary data file without modifying the contents of the original document. The author receives and views the secondary data files from the reviewers and selectively incorporates the changes into the document. Each reviewer may invite an unlimited number of sub-reviewers to review the document, the comments of each sub-reviewer similarly being stored in a secondary data file wherein only the author may edit the document directly.