Declares following code as publicly accessible.
Public
The Public and Private directives are used to control the visibility of subsequent declarations in a module or class.
If the Public directive is used in the main body of a module, all subsequent declarations will be public, and will be visible outside of the current module.
PrivateGlobal x,y,z 'These are private to the current module/classPublicGlobal P,Q,R 'These can be used by any module/class