--Unlike many other languages, VBA or even VB does not allow you to
initialize variables; this must be done with a separate executable statement.
--Each variable does have a default initialization value. Numeric variable
types are initialized to zero, Strings are initialized to "" or vbNullString,
Booleans are initialized to False and so on...
--VB .NET allows you to initialize variables in the declaration.
Dim x As Single = 1.23
Dim txt As String = "This is a test"