Indicates the help file and topic associated with an Error object.
· HelpContextID ¾ returns a context ID, as a Long value, for a topic in a Microsoft Windows Help file.
· HelpFile ¾ returns a String that evaluates to a fully qualified path to a Help file.
If a Help file is specified in the HelpFile property, the HelpContext property is used to automatically display the Help topic it identifies. If there is no relevant help topic available, the HelpContext property returns zero and the HelpFile property returns a zero-length string ("").