I have learned to do simple macros in Excel and how to combine them
with CTRL+a and so. Now I would like to have a worksheet with some
areas being erased at the opening of the file to make a clean start.
I can do it with a macro like Ctrl+a but how shall I do to have the
macro automatically run at the opening of the file, like the autostart
in Windows?

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Many thanks in advance !
Clippan