A New Approach to Conformance Pat Billingsley For the past several years, members of the ISO TC159/SC4/WG5 standards committee have been struggling to devise an appropriate conformance model for the software-related parts of the ISO 9241 standard, Ergonomic requirementsJ~r office work with visual display terminals. Part 14 of ISO 9241, Menu dialogues, has been the testing ground for the conformance issue. Several different approaches to conformance have been 13roposedby the committee, and each has subsequently been rejected by the ISO member nations who vote on drafts of Part 14. To date, WG5 has explored strategies that range from making most of the over 100 menu design recommendations in the document into mandatory requirements, to having a small sub-set of requirements, to having no requirements at all. None of these has proved satisfactory to enough voting nations to achieve approval of Part 14 at the DIS level. In their April meeting, the members of WG5 worked out a new approach to conformance that may at last prove successful. This approach should satisfy those who want to be sure the standard remains normative (that is, includes at least one requirement), as well as those who feel the standard should contain
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