define external function MailInBoxClose
                 value MailInBox this-MailInBox

This function closes the MailInBox. If "autodel" was specified and true when the MailInBox was opened, all messages in the box are deleted. If autodel is false, only messages marked for deletion are deleted.

Argument:

• "this-MailInBox" is an opaque object of type MailInBox.

Example:

  MailInBoxClose MyBox when MailInBoxIsInError MyBox