Declares following code as private to local module or class.
Private
The Public and Private directives are used to control the visibility of subsequent declarations in a module or class.
If the Private directive is used in the main body of a module, all subsequent declarations will be private and will not be visible outside of the current module.
Private
Global
x
,
y
,
z
'These are private to the current module
Public
Global
P
,
Q
,
R
'These can be used by any module