https://en.wikipedia.org/wiki/ISO/TR_11941
ISO/TR 11941 - Wikipedia
iso trwikipedia
https://www.iso.org/standard/31415.html
ISO/TR 13567-3:1999 - Technical product documentation — Organization and naming of layers for CAD —...
Technical product documentation — Organization and naming of layers for CAD — Part 3: Application of ISO 13567-1 and ISO 13567-2
iso trtechnical product