I dont see anything that explains about system with first arg "1".
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You also didn't see anything about passing a function (call) to system either.
system runs external commands (like robocopy.exe), not internal functions.
System normally waits for the external command to complete before returning, but (on windows only), if you pass 1 as the first parameter, it returns straight away leaving the command running in the background.
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
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