Re: How to get to BUD/s at my age? Really? Wow thanks for the info, I had always been under the impression that you had to be 28 or younger to go to BUD/s unless you had a waiver. I didn't realize that if you had a contract before your 29th that you would still be eligible, because depending on attempts you could be well into your 30's.
XLSX is a file extension for an open XML spreadsheet file format used by Microsoft Excel. Microsoft introduced the open XML standard to Microsoft Office in 2007 after a push from business users who saw the value in an open file format for transferring data between applications and other areas of working with the files. Support can also be added to earlier versions of Excel with Open XML component support.
The .xlsx and .xlsm formats store almost all components of the workbook in XML format, i.e. specially formatted text. This makes it easy for other programs to read and even manipulate the contents of the workbook without having to start Excel. The .xlsb format stores the core components of the workbook in binary format. You need Excel to read and edit it. So the .xlsx and .xlsm formats are more open. For small and medium-sized workbooks, the difference in size and in reading/writing speed between .xlsx/.xlsm on the one hand, and .xlsb on the other hand, are not significant.