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We rarely fire an event for each cell we're changing via code.

Enable Events to tell VBA processor whether to fire events or not.

(Isn't it annoying for us too when some work or something is told us again and again? The point here to understand is minimum qualifying of an object by VBA processor. Cells(3,4) Use vb Null String instead of ""(2 double quotes) : vb Null String is slightly faster than "", since vb Null String is not actually a string, but a constant set to 0 bytes, whereas "" is a string consuming at least 4-6 bytes for just existence.

o We modify any of the properties of the Page Setup object in a VBA macro.

Refer to this Microsoft article for more details - Use 'WITH' statement when working with objects: If we have to access an object's properties and methods in several lines, we must avoid using object's name or fully qualified object path again and again.

We might say, "VB does not use pointers", but it is not true.

"VB does not let you manipulate pointers" is more precise. If all we ever use are object pointers, how can we set the object itself to Nothing? When we set a reference to Nothing, something called the garbage collector kicks in.

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