Dim vs Private/Public

Question

At the head of a module, I wish to declare some global variables for use in various subs/functions.

What is the difference between

Dim x as string

Answer 1

Private and public control the scope of the variable or object you're declaring.

Private will only allow members of the relative module/class/whatever to access the instance

public will allow anything in the same scope as the module/class/whatever to access it.

Dim defaults to either public or private, depending on what you're working in. A class for example, will default to private. I suggest reading up on encapsulation and OOP to get a better feel for this.