XLSX Excel Spreadsheets are different than the XLS version in that they use the Microsoft Office Open XML format. The Open XML format makes it easy for other programs, such as OpenOffice.org, to read XLSX files (and other Open XML file types). The Open XML format was introduced with Microsoft Office 2007.
It was first published anonymously in Paris in 1697 in Histoires ou contes du temps passe (PassÃ©: English stories Or tales Of Past), times a collection of eight fairy tales By. perrault
Dickens wrote and published Great Expectations in 1860-1861, and though the novel looks back to an earlier time (1812-1840), the period of composition itself is noteworthy. England in 1860-1 was thoroughly Victorian. The Queen had been on the throne since 1837, and would reign for another 40 years.