Rosetta Stone have originally been displayed within a temple, possibly at nearby Sais. It was probably moved during the early Christian or medieval period, and was eventually used as building material in the construction of Fort Julien near the town of Rashid (Rosetta) in the Nile Delta. It was rediscovered there in July 1799 by a French soldier named Pierre-François Bouchard during the Napoleonic campaign in Egypt. It was the first Ancient Egyptian bilingual text recovered in modern times, and it aroused widespread public interest with its potential to decipher this previously untranslated hieroglyphic language. Lithographic copies and plaster casts began circulating
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