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ATAG2 Action related to A.4.1.4 Content Changes Reversible (Enhanced)

From: Richards, Jan <jrichards@ocad.ca>
Date: Wed, 8 Dec 2010 14:19:50 -0500
To: AUWG <w3c-wai-au@w3.org>
Message-ID: <F2C77FB59A1A4840A01EF5F59B1826E20A3057DD05@ocadmail.ocad.ca>
I had the action to: clarify that series means more than one and in the same session.

The first thing I noticed was that A.4.1.1 SC had also not clarified the authoring session issue and had a different structure than A.4.1.2:

PROPOSAL FOR A.4.1.1:
A.4.1.1 Content Changes Reversible (Minimum): For authoring actions, one of the following are true: (Level A)
Note 1: Reversing actions (e.g. an "undo" function) are also considered authoring actions, meaning they must also meet this success criterion (e.g., a "redo" function). 
Note 2: It is acceptable to collect a series of text entry actions (e.g. typed words, a series of backspaces) into a single reversible authoring action.
Note 3: It is acceptable to clear the authoring action history at the end of authoring sessions.
(a) Reversible: The authoring action can be immediately reversed; or 
(b) Warn and Confirm: The authoring tool includes a warning to authors that the action is irreversible and requires authors to confirm the action or save the current settings before proceeding.

UNCHANGED A.4.1.2:
A.4.1.2 Setting Changes Reversible: If actions modify authoring tool settings, then one of the following are true: (Level A)
(a) Reversible: The authoring tool setting can be reversed by the same mechanism that made the change; or 
(b) Warn and Confirm: The authoring tool includes a warning to authors that the action is irreversible and requires authors to confirm the action or save the current settings before proceeding.

REMOVE "A.4.1.3 Undo is Reversible" since it is now covered by A.4.1.1 Note 1

PROPOSAL A.4.1.4:
A.4.1.4 Content Changes Reversible (Enhanced): Authors can sequentially reverse a series of reversible authoring actions.
Note: The notes for A.4.1.1 still apply.

Intent of Success Criterion A.4.1.4:
The intent of this success criterion is to establish an enhanced Level AAA requirement for reversing inadvertent actions that modify the content being edited. Everyone makes mistakes, but some people with some disabilities have more difficulty creating error-free input. 

In addition, it may be harder for some people with disabilities to detect that they have made an error, so it is more likely that they will need to reverse a series of actions once the error is discovered.


-- 
(Mr) Jan Richards, M.Sc.
jrichards@ocad.ca | 416-977-6000 ext. 3957 | fax: 416-977-9844
Inclusive Design Research Centre (IDRC) | http://inclusivedesign.ca/
Faculty of Design | OCAD University
Received on Wednesday, 8 December 2010 19:20:07 GMT

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