This part of ISO/IEC Guide 21 provides methods for the following: a) determination of the degree of correspondence between regional or national standards and relevant International Standards (Clause 4); b) adoption of International Standards as regional or national standards (Clause 5); c) indication of technical deviations which would facilitate immediate recognition of any deviation (Clause 6); d) numbering of regional or national standards that are identical adoptions of International Standards (Clause 7); e) indication of the degree of correspondence between the regional or national standard and the International Standard (Clause 8). This part of ISO/IEC Guide 21 does not contain any rules for the use of an International Standard in production, trade, legislation or similar activities. It also does not deal with — adoption of regional or national standards as International Standards, — adoption of regional or national standards as other regional or national standards, — adoption of regional standards as national standards, or — adoption in or of technical regulations.