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Functions for external data
Google Spreadsheets supports cell formulas typically found in most desktop spreadsheet packages. These formulas can be used to create functions that manipulate data and calculate strings and numbers. Here's a list of all the functions available in each category.It’s been four months since our first Gmail Roundup . And Gmail being as popular as it is, it’s time for a major update. So here you go, over 80 Gmail tools and tips, including Firefox extensions, Greasemonkey scripts, Desktop programs, Web applications and all-purpose ‘HowTo’ guides.
GMail Collection: MakeUseOf.com