Removing a Users access to a Shared Workbook

[Aussiebear]

I recently came across this code and was wondering if it removes a particular User or all Users of a Shared workbook?

Sub Remove_User()
Dim UsrList()
UsrList = ThisWorkbook.UserStatus
For i = 1 To UBound(UsrList)
    ThisWorkbook.RemoveUser (i)
Next
End Sub

I'm assuming the Owner of the Workbook, maintains a list (UsrList) of those who can access (Read & Write) the workbook somewhere.