Binary read/writing files

I'm really only familar with qbasic's way of binary file access, and I can read binary using the Input command, but if I want to write a byte or two back to that file at a certain byte location without disrupting any other part of that file, how would I go about that?
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You could use the standard 'Seek' and 'Put' functions to replace one character in an Binary opened file in the following way :

strInsterString = "@"

Open <file> For Binary As #1

Seek #1, <Position in range between 1 – 2,147,483,647>

Put #1, , strInsterString

Close #1

Hope this helps!    

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Visual Basic Classic

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