private & public Опции

[Muggsy_rule]

объясните как работают эти ключевые слова! ???

[ozzy]

public (standard directive)
____________________________
Public and private act as reserved words within object type declarations but
are otherwise treated as directives.

Component identifiers declared in public component sections have no special
restrictions on their scope.

 private (standard directive)
 ______________________________
Private and public are reserved words only within objects.

The scope of component identifiers declared in private component sections
are restricted to the module (program or unit) that contains the object type
declaration.

   - Inside the module, private component identifiers act like normal public
     component identifiers.
   - Outside the module, private component identifiers are unknown and
     inaccessible.

Place related object types in the same module (or unit) where they can gain
access to each other's private components without making the private
components known to other's modules.