- From: Ben Caldwell <caldwell@trace.wisc.edu>
- Date: Wed, 15 Jan 2003 07:23:39 -0600
- To: <w3c-wai-gl@w3.org>
Here’s a first crack at a draft for the checklist requirements section of the techniques/checklists requirements doc (http://www.w3.org/WAI/GL/WCAG20/sources/wd-wcag2-tech-req.html#checklis t-req). It still needs a good deal of work, but hopefully it can serve as a starting point for discussion in our teleconference later this morning. -Ben Issues: Terminology. The Schema labels testable statements in checklists a "rule." Because some techniques will not be required (ex. they apply to items in the "additional ideas category"). Because this is a checklist, "checkpoints might be the best choice, but that is problematic given our guidelines structure. However, I think we should consider using another term. Some ideas include "measure" "benchmark" "checklist measure" "checklist items" and "checkboxes." In the draft text below, "checklist items" is used. The assumption these requirements makes is that the checklists can be constructed as a series of true/false statements where (for each possible view of the checklists) all checklist items would apply to all success criteria in the guidelines. Draft Checklist Requirements: 1.) Technology-specific Checklists must include technology-specific checklist items that address every success criterion in the guidelines. Note: Any success criteria that include an "or" statement should have all provisions included in one technology-specific checklist item so that you do not have checklist items that you don't have to pass if you’ve already addressed another item elsewhere in the checklist. 2.) Each success criterion addressed in a checklist needs to include a list of checklist items that are both necessary and sufficient to meet that success criterion. Note: If there are 2 or 3 interchangeable techniques which could be used to achieve a success criterion, they need to be listed all together in one Checklist ITEM as an "OR" proposition. 3.) Checklists should be constructed such that all items in the checklist must be marked true in order for the content to conform at that level. 4.) If there are no techniques for a particular technology that address a specific success criterion, then a checklist item for that success criterion must be present and must include information stating that the content must also be provided in another form that meets all of Level 1 requirements. 5.) Others? Explanatory Notes: To meet the minimum level conformance for a given checkpoint, all level 1 items in the checklist must be checked. No checkboxes should be optional. If the technique is "extra" and does not need to be done in order to meet a success criterion, then it should be listed at the "additional strategies" level. In other words, there shouldn't be any checkboxes at level 1 that are not required in order to comply with level 1. (otherwise, you end up with a checklist where it's ok to leave things unchecked and the checklist becomes an options list instead.) Where no techniques exist in a technology to address a success criterion, a checklist item might say something like, "This success criterion can not be met with this technology. Therefore, all of the content and function provided by the content using this technology is also available in another format which does meet all of the success criteria at this level." * Parallel formats/alternate versions of content (or portions of content) would need to meet all points at whatever level the conformance claim being made claims. (min level 1 or level 2 if criterion is a L2 item, etc.) * Alternate versions of content would always have to meet all of the level 1, and would only have to meet all L2 if they were claiming L2 conformance, but not if they were claiming level 1+) * This has to be done carefully so that what you don't do is have just this one aspect of the content in another form. (ex. it can't be that in one form it meets some criteria and in another form it meets others, but there is no single form that meets all SC. Especially not at the minimum level – or any other complete level) -- Ben Caldwell | caldwell@trace.wisc.edu Trace Research and Development Center (http://trace.wisc.edu)
Received on Wednesday, 15 January 2003 08:23:43 UTC