Complements and extends the internationally agreed definitions contained in Section 3.2 by providing conceptual explanations of many of these terms and by including additional terms.Cross References:BS 2846BS 3811BS 4727BS 4778:Part 1BS 4778:Part 2BS 4778:Section 3.2BS 5532BS 5760:Part 1BS 5760:Part 2DD 198BS ISO 2382