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) reused from lesson to lesson to invoke long-term retention. In version 3 pack, there are four units per language level. Each unit has four core lessons that are about 30 minutes long. The student then moves on to one of the following lesson modes: Pronunciation, Writing, Vocabulary, Grammar, Listening, Reading, Speaking. The Milestone is an exercise at the end of each unit in which students apply what they learned in the unit. In Rosetta Stone version 2 Language Packs, most lessons have two levels; a few have three. The first eight units have 84 lessons, plus eight reviews. The lessons