Syntax:

      /TYPE = (type-specification [, type-specification]...)

  Use /TYPE to specify a particular type  of  dictionary  directory  or
  object to be deleted.  Other types remain undeleted.

  A type specification names a type, such as DTR$DOMAIN or  CDD$RECORD,
  to be deleted.  You can use the wildcard characters % and * in a type
  specification.  The parentheses are optional if you specify only  one
  type.

  Note that when you delete a subdictionary  or  dictionary  directory,
  you also delete its descendants.