Rosetta Stone the Napoleonic Wars, a long-running dispute over the relative value of Young and Champollion's contributions to the decipherment and, since 2003, demands for the stone's return to Egypt. Two other fragmentary copies of the same decree were discovered later, and several similar Egyptian bilingual or trilingual inscriptions are now known, including two slightly earlier Ptolemaic decrees (the Decree of Canopus in 238 BC, and the Memphis decree of Ptolemy IV, c. 218 BC). The Rosetta Stone is, therefore, no longer unique, but it was the essential key to modern understanding of Ancient Egyptian literature and civilisation. The term "Rosetta Stone"
Rosetta Stone (software) 3.0 or 4.0.x. The Rosetta Stone v2.1 through v2.2.x are only compatible with v6.x language courses. These versions of the language packs and software engine are neither backward compatible nor forward compatible. Language discs developed for The Rosetta Stone v2.0.x are incompatible with these later revisions of the software. In v2.1.4.1A of The Rosetta Stone, the program began using copy protection software called SafeDisc. Rosetta Stone Version 3 is not backward compatible with language packs developed for Rosetta Stone Versions 1 or 2. Version 3 was initially released in August 2007 for ten bestselling languages, with other languages following later