GobalMutliUse Instancing vs. GlobalSingleUse

My documentation for VB says this about GlobalSingleUse Objects:

"For out of process components only, you can set the instancing property of a class module to GlobalSingleUse. If you do this, a separate instance of your component will be loaded into memory for each client. This requires a lot more memory than providing GlobalMultiUse objects"

Then earlier for GlobalMultiUse it says:

"Each client that uses the properties and methods of a GlobalMultiUse class gets its own instance of the class. In other words, the "Global" in GlobalMultiUse does not mean "one global instance that all clients share".

I know that the "global" means. IT is a reference to scope so that the classes who objects you use don't have to be explicitely created to use the objects contained therein.

However, I don't see a difference between MultiUse and SingleUse. (Is it a threading thingy?).

Thanks.

the difference between GlobalMultiUser and GlobalSingleUser is:
by GlobalSingleUser get every Client his own Instance
by GlobalMultiUser the first client create an Instance of the Object, all other clients get only a new thread of the object.

difference between GlobalMultiUser and MultiUser

if you have a class with GlobalMultiUser you don't need to declare the class. Example

Private Sub cmdCalculateResult_Click()
txtResult.Text = LeastReasonableReturn(CCur(txtBeginningBalance.Text))
End Sub

By MultiUser:

Private Sub cmdCalculateResult_Click()
Dim gfins as New Financials

txtResult.Text = gfins.LeastReasonableReturn(CCur(txtBeginningBalance.Text))

set gfins=nothing
End Sub