ISO/TC145-IEC/SC3C JWG 11 N 128

Transcription

1 ISO/TC145-IEC/SC3C JWG 11 N 128 ISO ORGANISATION INTERNATIONALE DE NORMALISATION INTERNATIONAL ORGANIZATION FOR STANDARDIZATION IEC COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE INTERNATIONAL ELECTROTECHNICAL COMMISSION Title: ISO and IEC combined compilation s on DIS/CDV Ed.2 Source: Convener Status: For discussion Date: This document was a combined compilation s received from ISO members and IEC members. It was based on the documents ISO/TC 145 N 522 and IEC 3C/1527/RVC for discussion at the forthcoming JWG 11 meeting to be held on 16 and 17 April 2007 in Vienna. This document should be used with the supplement, the document JWG 11 N 129, reproduced separately from the documents ISO/TC 145 N 522 and IEC 3C/1527/RVC. It should be noted that the original document ISO/TC 145 N 522 included the IEC document 3C/1459/INF, Position paper on the document 3C/1410A/CC on 3C/1394/CD (IEC Ed.2), which was discussed at IEC/SC 3C plenary in Berlin 2006.

2 Annex Date Document Project Nr C/1494/CDV IEC Ed.2 National AT-1 /Editorial) General The Austrian National does not agree with the revision of IEC Ed. 2 as proposed. See AT-4... AT-9 Noted. CZ-1 When the Austrian National voted positive on revising the standard, this was understood for correcting errors and filling-in details and/or missing aspects, but not for opening the design principles, making them meaningless. The Czech National does not agree with the revision of IEC Ed. 2 as proposed. See CZ-2 to CZ-4 Noted. DE-1 General The CZ NC voted for the acceptance of 3C/1394/CD but now after considering the scope and purpose of the new IEC/ISO with doc 3C/1494/CDV does not agree. The German National does not agree with the revision of IEC Ed. 2 as proposed. See DE-4... DE-9 Noted. FI-01 FR-01 General When the German National voted positive on revising the standard, this was understood for correcting errors and filling-in details and/or missing aspects, but not for opening the design principles, making them meaningless. The Finnish National does not agree with the revision of IEC Ed. 2 as proposed and cast a negative vote with following reason: The French National casts a negative vote with the following comments. Noted. Noted. 1

3 AT-2 /Editorial) General / ISO/IEC should be the basis for achieving consistency and alignment of IEC and ISO This basis is carried away by the revision of ISO/IEC as proposed. By opening up the basic design principles the intended harmonization of the two standards will be undermined and destroyed. See AT-4... AT-9 We fully support the proposed improvements of the ISO/IEC database as discussed at the IEC/SC 3C meeting in Berlin to provide in future symbol originals drawn in 2 mm as well as in 4 mm line width. DE-2 FI-02 FR-02 General / General / See the German position paper on this subject : IEC SC3C/1458/INF (attached) ISO/IEC should be the basis for See DE-4... DE-9 achieving consistency and alignment of IEC and ISO This basis is We fully support the proposed carried away by the revision of ISO/IEC improvements of the ISO/IEC database as proposed. as discussed at the IEC/SC 3C meeting By opening up the basic design in Berlin to provide in future symbol principles the intended harmonization of originals drawn in 2 mm as well as in 4 the two standards will be undermined mm line width. and destroyed. See the German position paper on this subject : IEC SC3C/1458/INF (attached) FI NC fully support the proposed improvements of the ISO/IEC database as discussed at the IEC/SC 3C meeting in Berlin to provide in future symbol originals drawn in 2 mm as well as in 4 mm line width. ISO/IEC should be the basis for We fully support the proposed achieving consistency and alignment of improvements of the ISO/IEC database IEC and ISO This basis is as discussed at the IEC/SC 3C meeting carried away by the revision of ISO/IEC in Berlin to provide in future symbol as proposed. originals drawn in 2 mm as well as in 4 By opening up the basic design mm line width. principles the intended harmonization of the two standards will be undermined and destroyed. 2

4 AT-3 /Editorial) General / If the design principles allow for a graphically inconsistent set of symbols in the database standard, this would mean that the average user needs extra effort to make symbols consistent first before application on a product. This is absolutely unacceptable for the average user. Alternative possibilities of handling design modifications of graphical symbols originals drawn in accordance with ISO/IEC Ed. 1 should be considered and taken into account to achieve a better and supportive handling of needed symbol modifications for the industry within the ISO/IEC database. DE-3 General / Harmonization is needed taking into account industry needs. This is not possible if design principles are too weak. If the design principles allow for a graphically inconsistent set of symbols in the database standard, this would mean that the average user needs extra effort to make symbols consistent first before application on a product. This is absolutely unacceptable for the average user. Harmonization is needed taking into account industry needs. This is not possible if design principles are too weak. If in certain application areas there is an industry need to have standardized alternative graphics as applied on products, such symbol application graphics might be additionally put into the symbol database. The basic design principles however need not be modified in principle but amended accordingly. Alternative possibilities of handling design modifications of graphical symbols originals drawn in accordance with ISO/IEC Ed. 1 should be considered and taken into account to achieve a better and supportive handling of needed symbol modifications for the industry within the ISO/IEC database. If in certain application areas there is an industry need to have standardized alternative graphics as applied on products, such symbol application graphics might be additionally put into the symbol database. The basic design principles however need not be modified in principle but amended accordingly. 3

5 FR-3 /Editorial) General / If the design principles allow for a graphically inconsistent set of symbols in the database standard, this would mean that the average user needs extra effort to make symbols consistent first before application on a product. This is absolutely unacceptable for the average user. Alternative possibilities of handling design modifications of graphical symbols originals drawn in accordance with ISO/IEC Ed. 1 should be considered and taken into account to achieve a better and supportive handling of needed symbol modifications for the industry within the ISO/IEC database. FR-1 FR-2 GB-01 JP-01 Avantpropos Avantpropos Introduction Introduction Harmonization is needed taking into account industry needs. This is not possible if design principles are too weak. a) ed Le titre de la nouvelle norme ISO est : Méthodes de vérification de la compréhensibilité b) ed Remplacer le terme «épaisseur de trait» par «largeur de trait» pour assurer la cohérence dans le vocabulaire utilisé dans les normes concernées et aussi avec le terme anglais «line width». Second paragraph The creation of graphical symbols for registration and the adaptation of registered graphical symbols for use in practice are different activities. The text should make clear how the four Parts of relate to these activities. 2, line 1 Editorial Use of terms and expression should be aligned with the title. If in certain application areas there is an industry need to have standardized alternative graphics as applied on products, such symbol application graphics might be additionally put into the symbol database. The basic design principles however need not be modified in principle but amended accordingly. Remplacer partout dans le texte de la présente norme le terme «intelligibilité» par «compréhensibilité» pour assurer une certaine cohérence entre les documents. Change second paragraph to: "International Standard is a multipart standard which provides principles and guidelines for the creation of graphical symbols for use on equipment (Parts 1 and 2) and also principles and guidelines for adapting registered symbols for use in practice (Parts 3 and 4)." provides principles should read provides basic principles. Accepted. 4

6 GB-02 FR-3 JP-02 JP-03 FR-4 FR-5 JP-04 Introduction /Editorial) Having clarified the purpose of the other parts of in the preceding paragraph, this paragraph would be clearer if it focused on Part 1. At the moment, only the words "form and use of arrows" refer to another part. 3 e alinéa ed Remplacer le terme «épaisseur de trait» par «largeur de trait» pour assurer la cohérence dans le vocabulaire utilisé dans les normes concernées et aussi avec le terme anglais «line width». 3, line 1 Editorial Use of terms and expression should be aligned with the sub-title. Change third paragraph of the introduction to: "This Part of the multi-part standard addresses the basic rules used to create graphical symbols for use on equipment, including line widths, negation elements and the use of the basic pattern. These design principles should be applied to all graphical symbols for use on equipment. They are required for graphical symbols for registration in IEC and ISO 7000." to create graphical symbols for use on equipment should read to create graphical symbols for registration in IEC or ISO 7000 for use on equipment. Accepted. Third paragraph Introduction Introduction Introduction 3, line 4 Editorial Typo should be corrected. This Part should read This part. Accepted. 1 3 e alinéa ed Remplacer le terme «signes de 1er sécurité» par «signaux de sécurité» tiret pour assurer la cohérence dans le vocabulaire avec les normes de l ISO/TC 145/SC alinéa ed Remplacer le terme «documentation 3 e tiret technique des produits» par «documentation technique de produits» pour assurer la cohérence dans le vocabulaire avec les normes de l ISO/TC , line 1 Editorial Use of terms and expression should be aligned with the title. provides principles should read provides basic principles. Accepted. 5

7 GB-03 AT-4 DE-4 GB-04 JP-05 GB-05 US ISO/TC1 45/SC3 AT-5 DE-5 FR-6 2. Normative references Referenc es to IEC and 4 (items 5 and 6 in list) /Editorial) Part 1 is about the creation of symbols for registration. Parts 3 and 4 are therefore not relevant. Delete references to parts 3 and 4 and add to Bibliography. 3 See comment and proposal AT-6 Add definition: Basic line width width used to draw the most significant part of a symbol original 3 See comment and proposal DE-6 Add definition: Basic line width width used to draw the most significant part of a symbol original 3.7 Symbol original Second line Symbol originals containing arrows have to comply also with Part Note Editorial There have been alternative titles used, which should be reflected to the note. 4. Creation procedures Bullet a) The text implies that a symbol will be used for only one function, whereas many of those registered in ISO 7000 have two (and occasionally three) functions. The text should make clear that a symbol can have more than one function. After IEC insert and, where appropriate, ISO , a unique name for the graphical symbol should read a unique name for the graphical symbol and, where appropriate, alternative name(s). After packaging, delete or. After instructions on the operation of equipment add, or a combination of these (and retain semi-colon at end of line). 4 c) ed Misspelled word. Change "fulfil" to "fullfil." Not accepted, because IEC Ed.2 shall be written in English. 4 d) 3) The text should be improved as follows: take into account the relationship with any other graphical symbols, symbol elements and symbol families and the related visual concept 4 d) 3) The text should be improved as follows: take into account the relationship with any other graphical symbols, symbol elements and symbol families and the related visual concept 4 g) ed Lire : «(ces dernières seront introduites dans les notes de la description).» 6

8 JP-1 FR-7 GB-06 FR-8 AT-6 /Editorial) 4 Note ed ISO 9186 is standardized procedure for testing the Public Sign. This information will lead misjudgement to introduce proposed Graphical symbols for use on equipment in ISO 7000 and IEC er alinéa 1ère ligne 7.1 Creation of symbol original NOTE on page 10 associated with Figure 3 Note should be deleted. ed Lire : «normalement utilisés avec» Editorial The words TC 145/SC 3 area of in the second line of the note are not necessary. After ( and delete TC145/SC 3 area of. 7.2 NOTE ed Lire : «ou lorsque la distance à laquelle le symbole est vu est importante.» 7.3 It is not acceptable to open up the standard to allow a wide range of line thicknesses for symbol originals. According to the investigation of the Japanese experts every symbol can be drawn in 2mm line width, but not all graphical symbols can be drawn in 4 mm line width. We propose according to industry needs to draw symbol originals either in 2 mm or 4 mm line width, or both. Replace text by: The basic line width of a symbol original shall be 2 mm or 4 mm. For visual clarity and improved comprehension, parts of the graphical symbol may be drawn using the double basic line width, in order to emphasize these symbol elements. If graphically necessary, parts of the symbol original may be drawn using other line widths wider than the basic line width, e.g. for depicting shapes. A 2 mm basic line width and a 4 mm basic line width version of the same symbol may be standardized. Accepted. -> As a consequence according to industry needs both versions (2 mm and 4 mm drawing) shall be implemented in the combined ISO/IEC database. 7

9 CZ-2 DE-6 /Editorial) 7.3 It is not acceptable to open up the standard to allow a wide range of line thicknesses for symbol originals. According to the investigation of the Japanese experts every symbol can be drawn in 2mm line width, but not all graphical symbols can be drawn in 4 mm line width. We propose according to industry needs to draw symbol originals either in 2 mm or 4 mm line width, or both. The advantages of 2 mm line width are evident and were discussed in detail earlier and were accepted universally. It is a fact that only a small part of the total of graphical symbols in IEC/ISO DB is created using 4 mm line width, specifically for the automotive industry. We are not aware that only other industry branch has proposed the use of 4 mm line width. 7.3 It is not acceptable to open up the standard to allow a wide range of line thicknesses for symbol originals. According to the investigation of the Japanese experts every symbol can be drawn in 2mm line width, but not all graphical symbols can be drawn in 4 mm line width. We propose according to industry needs to draw symbol originals either in 2 mm or 4 mm line width, or both. Replace text by: The basic line width of a symbol original shall be 2 mm or 4 mm. For visual clarity and improved comprehension, parts of the graphical symbol may be drawn using the double basic line width, in order to emphasize these symbol elements. If graphically necessary, parts of the symbol original may be drawn using other line widths wider than the basic line width, e.g. for depicting shapes. A 2 mm basic line width and a 4 mm basic line width version of the same symbol may be standardized. Replace text by: The basic line width of a symbol original shall be 2 mm or 4 mm. For visual clarity and improved comprehension, parts of the graphical symbol may be drawn using the double basic line width, in order to emphasize these symbol elements. If graphically necessary, parts of the symbol original may be drawn using other line widths wider than the basic line width, e.g. for depicting shapes. A 2 mm basic line width and a 4 mm basic line width version of the same symbol may be standardized. -> As a consequence according to industry needs both versions (2 mm and 4 mm drawing) shall be implemented in the combined ISO/IEC database. 8

10 FI-02 GB-07 JP-06 JP-2 AT-7 CZ-3 /Editorial) 7.3 So in clause 7.3 line width of symbol originals must be written to more precise. 7.3 width Second sentence Replace 7.3 text by following: The basic line width of a symbol original shall be 2 mm or 4 mm. For visual clarity and improved comprehension, parts of the graphical symbol may be drawn using the double basic line width, in order to emphasize these symbol elements. If graphically necessary, parts of the symbol original may be drawn using other line widths wider than the basic line width, e.g. for depicting shapes. The ratio of line widths should be 2:1 as in Figure 4. The reasons for recommending a line width of 4 mm should be made explicit. Note: Users of the joint database should be provided with information to explain why the line widths of symbol originals may vary and to point out that symbols originals may need to be adapted for use in practice Editorial The order of the first two sentences would better be changed ed The first two sentences should be exchanged their order. Replace 7.3 text by following: The basic line width of a symbol original shall be 2 mm or 4 mm. For visual clarity and improved comprehension, parts of the graphical symbol may be drawn using the double basic line width, in order to emphasize these symbol elements. If graphically necessary, parts of the symbol original may be drawn using other line widths wider than the basic line width, e.g. for depicting shapes. The ratio of line widths should be 2:1 as in Figure 4. Replace "In general,..." with "In order to achieve a simple design and avoid unnecessary detail and complexity,...". To read, In general, a line width of 4 mm for a symbol original is recommended. The line width of the symbol original shall be 2 mm minimum. That reads as In general, a line width of a symbol original 4 mm is recommended. The line width shall be 2 mm minimum. If for the purpose of The text should be improved as follows: Change shall be 3 mm into shall be 3 mm for a 2 mm basic line width symbol original, and 4 mm for a 4 mm basic line width symbol original 7.4 The text should be improved as follows: Change shall be 3 mm into shall be 3 mm for a 2 mm basic line width symbol original, and 4 mm for a 4 mm basic line width symbol original 9

11 DE-7 AT-8 DE-8 FR-9 AT-9 /Editorial) 7.4 The text should be improved as follows: Change shall be 3 mm into shall be 3 mm for a 2 mm basic line width symbol original, and 4 mm for a 4 mm basic line width symbol original 7.9 It is not acceptable to open up the standard to allow different ways of negating a symbol. While currently there are different ways of negating a symbol in the database, it is the clear target of this standard to overcome this difference and come up with only one way of negating a symbol. The negation with a single diagonal bar as shown in the example b) in Figure 5 shall be avoided according to It is not acceptable to open up the standard to allow different ways of negating a symbol. While currently there are different ways of negating a symbol in the database, it is the clear target of this standard to overcome this difference and come up with only one way of negating a symbol. The negation with a single diagonal bar as shown in the example b) in Figure 5 shall be avoided according to c) ed Lire : «et les rectangles sur les rectangles 5 et 6» 8.2 d The standard should not be opened up to allow symbol originals to extend the octagon, except that a 2 mm line may be centred on the octagon line. This should not be a practical problem, since in real application, symbols have to be matched in size and appearance anyway, and the octagon is not visible there. Replace by: Negation shall be indicated by a cross of lines formed by two diagonal bars at right angles, as in the examples a) and c) in Figure 5. In exceptional cases, only for visual clarity, a single diagonal bar as in the example b) in Figure 5 may be used. The example in Figure 5 b) should be replaced by symbol ISO Replace by: Negation shall be indicated by a cross of lines formed by two diagonal bars at right angles, as in the examples a) and c) in Figure 5. In exceptional cases, only for visual clarity, a single diagonal bar as in the example b) in Figure 5 may be used. The example in Figure 5 b) should be replaced by symbol ISO Replace by: Symbol originals should be created to the largest size possible, in line with the above principles, and should not exceed the octagon 8 by more than 1 mm (half of the thickness of a 2 mm line). Only in exceptional cases where a symbol original is very complex may the symbol further extend the octagon 8. Symbol originals shall not extend beyond the 75 mm square 1 of the basic pattern; 10

12 CZ-4 DE-9 AT-10 DE-10 JP-07 GB-8 /Editorial) 8 d) The standard should not be opened up to allow symbol originals to extend the octagon, except that a 2 mm line may be centred on the octagon line. This should not be a practical problem, since in real application, symbols have to be matched in size and appearance anyway, and the octagon is not visible there. 8.2 d The standard should not be opened up to allow symbol originals to extend the octagon, except that a 2 mm line may be centred on the octagon line. This should not be a practical problem, since in real application, symbols have to be matched in size and appearance anyway, and the octagon is not visible there. 8.2 Figure 7 The examples contradict the design principles given before, example o) is larger in visual appearance than the other symbols 8.2 Figure 7 The examples contradict the design principles given before, example o) is larger in visual appearance than the other symbols 8.3 Figure 8 Editorial A line width is recommended 4 mm in clause 7.3, therefore example symbol drawn 4 mm line width should be added or changed IEC for IEC in Figure Application of symbol originals Whole clause IEC is concerned with the preparation of symbol originals for registration in ISO 7000 or IEC it is not concerned with the application of such symbols. Therefore, the reference to parts 3 and 4 of the series is irrelevant. Replace text by: symbol originals should be created to the largest size possible, in line with the above principles, and should not exceed the octagon 8 by more than 1 mm (half of the thickness of a 2 mm line). Only in exceptional cases where a symbol original is very complex may the symbol further extend the octagon 8. Symbol originals shall not extend beyond the 75 mm square 1 of the basic pattern; Replace by: Symbol originals should be created to the largest size possible, in line with the above principles, and should not exceed the octagon 8 by more than 1 mm (half of the thickness of a 2 mm line). Only in exceptional cases where a symbol original is very complex may the symbol further extend the octagon 8. Symbol originals shall not extend beyond the 75 mm square 1 of the basic pattern; Replace o) with symbol 0709 Replace o) with symbol 0709 For example, take: IEC or Delete whole of clause 9 and move the text from clause 9 to the Introduction to become the penultimate paragraph. 11

13 GB-9 AT-11 CZ-5 DE-11 AT-12 Annex A Whole Annex A.1 2 Paragraph /Editorial) Annex A is not a specification because it provides examples and not a prescriptive list of titles and descriptions. Moreover, the list is not exhaustive and does not include comprehensive and useful descriptions of the type: a). When uses as a control.b). When used as a telltale There is no need for an alternative title but for more than one title. A.1 2 nd par. There is no need for an alternative title but for more than one title. A.1 2 Paragraph A.1 3 Paragraph There is no need for an alternative title but for more than one title. The text and the given examples should be improved as follows: Change Annex A to Informative and add more examples or (preferably) delete the whole Annex and issue similar material as guidance agreed between IEC/SC 3C and TC 145/SC 3. This guidance could be published both in paper form and on the home page of the joint database. If there is a need for more than one title, the titles should be separated with the punctuation mark semicolon. Examples: Live working; double triangle Clock; time switch; timer Lamp; lighting; illumination If there is a need for more than one title, the titles should be separated with the punctuation mark semicolon. Examples: Live working; double triangle Clock; time switch; timer Lamp; lighting; illumination If there is a need for more than one title, the titles should be separated with the punctuation mark semicolon. Examples: Live working; double triangle Clock; time switch; timer Lamp; lighting; illumination If there is a need for an additional specification, it shall be introduced after the title with the punctuation mark comma. Examples: Colour temperature, fluorescent lamp Colour temperature, cloudy/rainy Colour temperature, sunrise/sunset Trencher, digging boom, raise Trencher, digging boom, lower Trencher, digging boom, forward rotation Trencher, digging boom, reverse rotation To be discussed together with other comments and proposals under Annex A. 12

14 DE-12 AT-13 DE-13 AT-14 DE-14 GB-10 GB-11 A.1 3 Paragraph A.2 1 Paragraph A.2 1 Paragraph A.2 2 Paragraph A.2 2 Paragraph Annex A A2 Description Annex A A2 Description Second example in list after first paragraph Second paragraph /Editorial) The text and the given examples should be improved as follows: Give guidance when to use which wording. See attached document Suggested wording.doc for a list of phrases and indications how to use them Give guidance when to use which wording. See attached document Suggested wording.doc for a list of phrases and indications how to use them If there is a need for an additional specification, it shall be introduced after the title with the punctuation mark comma. Examples: Colour temperature, fluorescent lamp Colour temperature, cloudy/rainy Colour temperature, sunrise/sunset Trencher, digging boom, raise Trencher, digging boom, lower Trencher, digging boom, forward rotation Trencher, digging boom, reverse rotation Incorporate guidance into document how phrases should be used, e.g. as in annexed document Suggested wording.doc. Incorporate guidance into document how phrases should be used, e.g. as in annexed document Suggested wording.doc. The main field of application is additional Change restriction into reference information but no restriction. The main field of application is additional Change restriction into reference information but no restriction. The second item in the list of examples is To indicate a reference to. This suggests that any symbol for which this form of description is appropriate is intended to appear on a technical drawing, or in technical product documentation, and such symbols are outside the scope of the series. This Annex specifies a description may be preceded by specifying that the symbol s use is restricted to a product area by using the formulation on. as a stand-alone text. This is a clumsy formulation which does not specify a restriction on use but gives only an example of use. Delete To indicate a reference to. In cases where there is a genuine need to restrict the use of a symbol this should be clearly stated in a note e.g. "The use of this graphical symbol is restricted to...". Reproduced as a separate JWG 11 document for discussion. Reproduced as a separate JWG 11 document for discussion. 13

15 AT-15 /Editorial) A.3 According to the ISO/IEC Directives notes are not normative. There should be a clear distinction between not normative notes and normative remarks. Change A.3 into A.3.1 Notes and A.3.2 Remarks with a clear definition. Notes are used for cross references, additional information for the application of the symbol and additional explanations. Remarks are used for restrictions of the application of the symbol. Improve the examples as follows: Examples for notes: The meaning of this symbol depends on its orientation (see symbol 5091). The right circle may be filled instead of the left circle, if two symbols are shown on the same equipment. To represent a rotation in one direction only, omit the other arrow. Example for remark: If this symbol is reproduced in colour, the colours of the dots shall be red (left), blue (top) and green (right). In case of application in a warning sign the rules according to ISO 3864 shall be adhered to. The symbol 5433 shall be used in conjunction with symbol Give guidance when to use which wording (see examples as given in annexed document Suggested wording.doc.) 14

16 DE-15 /Editorial) A.3 According to the ISO/IEC Directives notes are not normative. There should be a clear distinction between not normative notes and normative remarks. Change A.3 into A.3.1 Notes and A.3.2 Remarks with a clear definition. Notes are used for cross references, additional information for the application of the symbol and additional explanations. Remarks are used for restrictions of the application of the symbol. Improve the examples as follows: Examples for notes: The meaning of this symbol depends on its orientation (see symbol 5091). The right circle may be filled instead of the left circle, if two symbols are shown on the same equipment. To represent a rotation in one direction only, omit the other arrow. Example for remark: If this symbol is reproduced in colour, the colours of the dots shall be red (left), blue (top) and green (right). In case of application in a warning sign the rules according to ISO 3864 shall be adhered to. The symbol 5433 shall be used in conjunction with symbol Give guidance when to use which wording (see examples as given in annexed document Suggested wording.doc.) 15

17 AT-16 DE-16 JP-8 /Editorial) B.2 It makes sense that graphical symbols which have a direct relation are kept together. The possibility to use for such related symbols the exceptional designation system is needed also in future for new graphical symbols, see for example IEC , ,6010-2, , , , , , , , The exceptional designation system B.2 should become B and B and the text should be improved as follows: B.2 It makes sense that graphical symbols which have a direct relation are kept together. The possibility to use for such related symbols the exceptional designation system is needed also in future for new graphical symbols, see for example IEC , ,6010-2, , , , , , , , The exceptional designation system B.2 should become B and B and the text should be improved as follows: Annex B B.2, note Editorial Taking into account current practice and tendency, the Note should be the full statement in the main body with a minor modification of deletion of the last sentence as follows. B.2.1 In exceptional cases where there are two or more alternative graphical representations for one meaning, these are distinguished by the addition of a letter after the registration. Example: IEC A IEC B B.2.2 In exceptional cases where the meaning of a symbol original was extended by a qualifying element to include a specific meaning, the symbol original with the specific meaning has the same registration with a dashed numerical suffix. Example: IEC IEC IEC IEC B.2.1 In exceptional cases where there are two or more alternative graphical representations for one meaning, these are distinguished by the addition of a letter after the registration. Example: IEC A IEC B B.2.2 In exceptional cases where the meaning of a symbol original was extended by a qualifying element to include a specific meaning, the symbol original with the specific meaning has the same registration with a dashed numerical suffix. Example: IEC IEC IEC IEC In exceptional cases where the meaning of a symbol original was extended by a qualifying element to include a new meaning, the symbol original with the new meaning has the same registration with a dashed numerical suffix. 16

18 JP-3 /Editorial) Annex B B.2 ed This (second) exceptional case is very effective system to avoid useless increasing the quantity of standardized graphical symbols in ISO 7000 and IEC Note should be include in main sentence and the last sentence should be deleted. FORM COMMENTS