The Document Book provides a unique document management tool that provides a link between the assorted reference documents required to manage the information associated with tag number or Unitt. From the document book you can provide links to all of the project's documents and have "one button" action for quick opening. Project documents such as reference drawings for P&ID, loop sheets, mechanical drawings and others can be accessed directly from the document book. Also, documents such as industry standards, vendor documents, calibration procedures, maintenance procedure, etc., can be linked and opened from the document book interface.