I would like to choose the information saved on the header. Moreover, headers are perfect if file saved are .lvm and opened with Notepad, but they are not easy to read and interpret when written as.xls in order to open file with Excel and try data operations.
N.B. What I do to choose the type of destination file is simply selecting data.txt, or data.xls or data.lvm etc... Is it correct, or do I have to do something else to import data in a specific format?