Rosetta Stone found, but later Egyptologists, including Wallis Budge, used these other copies to refine the reconstruction of the hieroglyphs that must have been used in the lost portions of the hieroglyphic text on the Rosetta Stone. Napoleon's 1798 campaign in Egypt came at (and helped cause) the beginning of a burst of Egyptomania in Europe, and especially France. A corps of 167 technical experts ("savants"), known as the "Commission des Sciences et des Arts", accompanied the French expeditionary army to Egypt. On 1799, French soldiers under the command of Colonel d'Hautpoul were strengthening the defences of Fort Julien, a couple of
Rosetta Stone (software) and higher. Later revisions of Version 1 for Macintosh required System 7. The final revision of Version 1 was v1.9. At Version 2, Fairfield continued to add more language courses, but also marketed more editions of The Rosetta Stone software. The PowerPac CD-ROM introduced in Version 1 now featured basic lessons in seven languages. One complete level of a language course was now called a Personal Edition of the software. Because many consumers found The Rosetta Stone to be too expensive, Fairfield started a series of "Explorer" editions. An Explorer CD-ROM was a lower-cost excerpt of a Version 2 course.