Appeal No. 1999-2720 Application No. 08/580,965 application. The invention relates to a method and apparatus for maintaining source control for new successive versions of software where modifications have been made to a first version S1 are not included in the new version S3 (specification, page 1, and figure 1). The invention allows changes in a new version S3 of the software to be incorporated into the modified initial version of the software S2 (specification, page 3, lines 3-5). The difference between the new version S3 and the initial version S1 is integrated into a copy of the initial version S1', and the integrated copy is then integrated with a copy of the modified initial version S2 to yield a modified new version S4 (figures 4(a) through 4(d), and specification, page 7, lines 9-30 through page 9, lines 1-14). Independent claim 1 is reproduced as follows: 1. A method of maintaining version control for an initial S1 of software stored in a memory, where the initial version has been modified to yield a modified initial version S2 of the software that is also stored in the memory, the method comprising the steps, performed by a data processing system, of: 2Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007