6.9 ARCHITECTURAL AND TECHNICAL DRAWINGS, STANDARD NUMBER AREA
6.9A. Preliminary rule
6.9A1. Scope.
Use this area only to item level description to record international numbers pertaining to the item, including published architectural series and files described at the item levels.
6.9A2. Punctuation
Precede this area by a full stop, space, dash, space or start a new paragraph.