W3C home > Mailing lists > Public > public-comments-wcag20@w3.org > August 2004

My technical review of WCAG 2.0

From: Harvey Bingham <hbingham@acm.org>
Date: Fri, 27 Aug 2004 09:02:46 -0400
Message-Id: <6.1.1.1.2.20040827084625.01f0d1e0@pop.rcn.com>
To: public-comments-wcag20@w3.org

Thanks for inviting public comments. I appreciate this opportunity to
express my thanks for your hard work.

The following suggestions are made with no expectation of response;
take them for what they are worth.  Last time Wendy felt she needed
to identify the resolution of each item.

====
Here are my editorial conventions:
____
Locator:  by section, whose name I show following such a separator
    Pd   principal d
    pn:   paragraph n therein
Bracketing:
    CcommentC
    +insert+
    XomitX
    ?clarify?
    Gadd to glossaryG
    B2 bullet 2B
    Ox ordered list item x
GLn Guideline nGL
GEn Guideline Example nGE
====
____
Scope
     Gfull range of disabilitiesG
____
Conformance
     Guser agentG  referred to 4 places
____
Overview of Design Principals
     2. GoperableG    some amplification is in following p2
____
User Needs
     B2 ,,,will want to hear, +possibly by text-to-speech synthesis,+ or feel …

____
P1 Od GMultimediaG    I believe the breadt of Multimedia needs to be 
explicated.
____
GL1.3 Level 1 Success Criteria
O4. Avoid blinking or flashing content O  [you discuss this later, but why 
isn’t it a criteria?]
____
GL1.4
Level 2 Success Criteria
O2. +Alternatively provide a presentation without the background, such as 
the frequently found “print” option.+

GE1.4 Example 1 … why leave implicit “no letters are light on dark? GE

GL1.5 (audio contrast)  Level 3 success Criteria for Guideline 
1.5  Note:  A 20 db difference in sound level.
? I expect that such background sound that meets this requirement will be 
approximately four times
( 4x) quieter than the foreground audio content – will be hard to 
verify--particularly when there are competing sounds.

____
P2: Interface elements in the content must be GoperableG.

GL2.1GL

Level 1 Success Criteria …All functionality of the content, “where the 
content or its outcome” ?can be described in a sentence,?
Is operable through a keyboard or keyboard interface.  I have no idea what 
“described in a sentence” means here!

It needn’t be, as written, if  it can’t be describe in a sentence!

Level 3 Success Criteria for guideline 2.1
+Why omit the alternative +voice command+?
____
Who Benefits from G2.1
B2 …(which simulates keystrokes +or commands+)
____
Examples of Guideline 2.1
Example 1  …”focus-in, focus-out”  ?what?  These need to be explained: GfocusG
____
GL2.2 ..
Level 1 success criteria

P2 Interface elements in the content must be GoperableG

GL 2.1 Level3 Success Criteria for Guideline 2.1
Another alternative for functionality is +voice command.+ which need not be 
a keyboard equivalent.
____
Who benefits from Guideline 2.1

B2
Speech input (which simulates keystrokes +or commands+

GE 2.1  Gfocus-in, focus-outG
____
Level 1 Success Criteria for Guideline 2.2

O1.
B2 … over a wide range which is at least ten times the length of the 
default setting ?presumes there is such?
? some may wish it to be faster, others slower. Level 2 Success Criteria 
for Guideline 2.2

User is allowed to turn off content that blinks for more than 3 seconds. 
?Why not allow total turn-off of blink –
Photo-sensitive epilepsy.
____
Level 3 success Criteria for Guideline 2.2  Editorial Note  … Real time 
events – Ask/notify the user on real-time events,
How they should be presented.
____
Who Benefits from Guideline 2.2

B2  … when read out of order +by+ an assistive technology …

____
Example of Guideline 2.2
B2 The content provides an option that allows the user to turn off the 
blinking +or never allow it.+
?The audio channel might be used as an alternative to blinking text?

____
GL2.3 Content that violates General Flash Threshhold or Red Flash 
Threshhold  -- These are new concepts,
Described below.  [?should they rather be in the Glossary as well?]

Editorial Note:  A free tool … available by the second quarter of 2004 …?is it?

I find the above far too technical, and not obviously related to
Who Benefits from Guideline 2.3+?+
____
GL2.4  ?Why isn’t this the place to allow text search?
____
Level 2 Success Criteria for Guideline 2.4
  ____
O1 c.  You mean alternative not alternate – which means every other.
____
Level 3 Success Criteria for Guideline 2.4
O3  Logical tab order may not be testable – but if there is tab index on 
links is there, author has judged what it should be, so needn’t question it.
____
5.  Are there any others?

d. lists
e. tables, with navigable data and also layout tables
____
GL 2.5 level 2 Success Criteria … in an accessible forma that meets +the 
other+ ____
Level 1 success Criteria).
____
Level 3 Success Criteria for Guideline 2.5  …there are less than 75 of them 
?Don’t you mean 5 +/- 2
____
GL 3.1
____
Level 2 Success Criteria

The meanings and pronunciations of all words [in the content ?This is a 
major testing burden? Cam be programmatically located.

Note This does not include use of foreign words in text where such usage is 
a standard extension o the language. ?Canadian bilingual injections may 
need to be specially noted.
____
Level 3 Success Criteria
Instructions and operable content  ?operable content?
Need different bullet form under Being clear where the document …
B5 Use default settings (and Xthe ease in re-establishing themX) +and an 
easy method to establish and change them+
____
Editorial Note … text-only variants …  I agree the choice should be reinstated.
____
Who benefits from Guideline 3.1  b1  a speech synthesizer ?few are 
multi-lingual?
____
B3 Defining key terms and specialized +(technical)+ language
____
Examples of Guideline 3.1
____
Example 4.   replace XconcreteX by +explicit+ 2 places
____
Example 6  at end ?(there is implicitly the choice by the user how to 
access the raw data – but how?.)
____
Guideline 3.2  “page to page”
Editorial note.  “page”   might be “logical sequence, as if in page order.”
____
Level 2 success Criteria for Guideline 3.2  Repeated components “page to 
page” should be skippable, to get to the meat of the content.
_____
Who benefits from Guideline 3.2
_____
B2 sub bullet 1   Should there be a keyboard action for a back button?
____
P4 Content must be robust enough to work work with current and future 
technologies  ?But how can we have such foresight?
____
Who benefits from Guideline 4.2
____
Last bullet  typo “Individuals who can not …”   … equipment XasX +so+ often.

____
Glossary
____
?User action?
____
?Informative?  contrast with Normative
____
Marked in way that the user can access prior to its appearance

?replace “provocative” by “contentious”.
____
Natural Language
There is no pretense that signed language synthesis is needed.
____
Programmatic user interface component  ?what?
Received on Friday, 27 August 2004 13:05:21 UTC

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