Edit comment LC-446 for Mobile Web Best Practices Working Group

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Comment LC-446

Comment Shortname:

Commenter: Ian B. Jacobs <ij@w3.org>

Message-id:

Section of the document concerned:

[Free text description]Document as a wholeMobile Web Best Practices 1.0 Basic Guidelines W3C Working Draft 12 April 2006 Abstract Status of this Document Table of Contents Appendices List of Best Practices 1 Introduction 1.1 Purpose of the Document 1.2 How the Best Practices are Organized 1.3 Audience 1.4 Scope 1.4.1 Phasing 1.5 Relationship to other Best Practices and recommendations 1.6 Longevity and Versioning 2 Requirements 2.1 Presentation Issues 2.2 Input 2.3 Bandwidth and Cost 2.4 User Goals 2.5 Advertising 2.6 Device Limitations 2.7 Advantages 3 Delivery Context 3.1 One Web 3.2 Background to Adaptation 3.3 Adaptation Implementation Model 3.4 Assumptions about Adaptation 3.5 Establishing Context 3.6 Choice of User Experience 3.7 Default Delivery Context 4 Structure of Best Practice Statements [EXAMPLE] This is a ... 5 Best Practice Statements 5.1 Overall Behavior 5.1.1 Thematic Consistency of Resource Identified by a URI [THEMATIC_CONSISTENC... 5.1.1.1 What it means 5.1.2 Exploit Client Capabilities [CAPABILITIES] Explo... 5.1.2.1 What it means 5.1.3 Work around Deficient Implementations [DEFICIENCIES] Take ... 5.1.3.1 What it means 5.1.4 Testing [TESTING] Carry out ... 5.1.4.1 What it means 5.1.4.2 How to do it 5.2 Navigation and Links 5.2.1 URIs of Site Entry Points [URIS] Keep the URIs... 5.2.1.1 What it means 5.2.1.2 How to do it 5.2.2 Navigation Bar [NAVBAR] Provide onl... 5.2.2.1 What it means 5.2.2.2 How to do it 5.2.3 Balanced Structure [BALANCE] Take into ... 5.2.3.1 What it means 5.2.4 Navigation Mechanisms [NAVIGATION] Provide... 5.2.4.1 What it means 5.2.4.2 How to do it 5.2.4.3 References 5.2.5 Access Keys [ACCESS_KEYS] Assign... 5.2.5.1 What it means 5.2.5.2 What to test 5.2.5.3 References 5.2.6 Link Target Identification [LINK_TARGET_ID] Cle... [LINK_TARGET_FORMAT]... 5.2.6.1 What it means 5.2.6.2 How to do it 5.2.6.3 What to test 5.2.6.4 References 5.2.7 Image Maps [IMAGE_MAPS] Do not ... 5.2.7.1 What it means 5.2.7.2 How to do it 5.2.7.3 What to test 5.2.7.4 References 5.2.8 Refreshing, Redirection and Spawned Windows [POP_UPS] Do not cau... [AUTO_REFRESH] Do no... [REDIRECTION] Do not... 5.2.8.1 What it means 5.2.8.2 What to test 5.2.8.3 References 5.2.9 Externally Linked Resources [EXTERNAL_RESOURCES]... 5.2.9.1 What it means 5.2.9.2 How to do it 5.2.9.3 What to test 5.3 Page Layout and Content 5.3.1 Page Content [SUITABLE] Ensure th... [CLARITY] Use clear ... [LIMITED] Limit cont... 5.3.1.1 What it means 5.3.1.2 What to test 5.3.1.3 References 5.3.2 Page Size [PAGE_SIZE_USABLE] D... [PAGE_SIZE_LIMIT] En... 5.3.2.1 What it means 5.3.2.2 How to do it 5.3.2.3 What to test 5.3.2.4 References 5.3.3 Scrolling [SCROLLING] Limit sc... 5.3.3.1 What it means 5.3.3.2 How to do it 5.3.3.3 What to test 5.3.4 Navigation Bars etc. (Extraneous material) [CENTRAL_MEANING] En... 5.3.4.1 What it means 5.3.4.2 How to do it 5.3.4.3 What to test 5.3.4.4 References 5.3.5 Graphics [GRAPHICS_FOR_SPACIN... [LARGE_GRAPHICS] Do ... 5.3.5.1 What it means 5.3.5.2 What to test 5.3.6 Color [USE_OF_COLOR] Ensur... [COLOR_CONTRAST] Ens... 5.3.6.1 What it means 5.3.6.2 What to test 5.3.6.3 References 5.3.7 Background Images [BACKGROUND_IMAGE_RE... 5.3.7.1 What it means 5.3.7.2 What to test 5.4 Page Definition 5.4.1 Title [PAGE_TITLE] Provide... 5.4.1.1 What it means 5.4.1.2 What to test 5.4.2 Frames [NO_FRAMES] Do not u... 5.4.2.1 What it means 5.4.2.2 What to test 5.4.2.3 References 5.4.3 Structural Elements [STRUCTURE] Use feat... 5.4.3.1 What it means 5.4.3.2 How to do it 5.4.4 Tables [TABLES_SUPPORT] Do ... [TABLES_NESTED] Do n... [TABLES_LAYOUT] Do n... [TABLES_ALTERNATIVES... 5.4.4.1 What it means 5.4.4.2 How to do it 5.4.4.3 What to test 5.4.4.4 References 5.4.5 Non-Text Items [NON-TEXT_ALTERNATIV... [OBJECTS_OR_SCRIPT] ... 5.4.5.1 What it means 5.4.5.2 How to do it 5.4.5.3 What to test 5.4.5.4 References 5.4.6 Image Size [IMAGES_SPECIFY_SIZE... [IMAGES_RESIZING] Re... 5.4.6.1 What it means 5.4.6.2 What to test 5.4.7 Valid Markup [VALID_MARKUP] Creat... 5.4.7.1 What it means 5.4.7.2 What to test 5.4.7.3 References 5.4.8 Measures [MEASURES] Do not us... 5.4.8.1 What it means 5.4.8.2 How to do it 5.4.8.3 What to test 5.4.9 Style Sheets [STYLE_SHEETS_USE] U... [STYLE_SHEETS_SUPPOR... [STYLE_SHEETS_SIZE] ... 5.4.9.1 What it means 5.4.9.2 How to do it 5.4.9.3 What to test 5.4.9.4 References 5.4.10 Minimize [MINIMIZE] Use terse... 5.4.10.1 What it means 5.4.10.2 How to do it 5.4.10.3 What to test 5.4.11 Content Types [CONTENT_FORMAT_SUPP... [CONTENT_FORMAT_PREF... 5.4.11.1 What it means 5.4.11.2 How to do it 5.4.11.3 What to test 5.4.12 Character Encoding [CHARACTER_ENCODING_... [CHARACTER_ENCODING_... 5.4.12.1 What it means 5.4.12.2 How to do it 5.4.12.3 What to test 5.4.12.4 References 5.4.13 Error Messages [ERROR_MESSAGES] Pr... 5.4.13.1 What it means 5.4.13.2 How to do it 5.4.13.3 What to test 5.4.14 Cookies [COOKIES] Do not rel... 5.4.14.1 What it means 5.4.14.2 How to do it 5.4.14.3 What to test 5.4.15 Cache Headers [CACHING] Provide ca... 5.4.15.1 What it means 5.4.15.2 How to do it 5.4.15.3 What to test 5.4.15.4 References 5.4.16 Fonts [FONTS] Do not rely ... 5.4.16.1 What it means 5.4.16.2 How to do it 5.4.16.3 What to test 5.5 User Input 5.5.1 Input [MINIMIZE_KEYSTROKES... [AVOID_FREE_TEXT] Av... [PROVIDE_DEFAULTS] P... [DEFAULT_INPUT_MODE]... 5.5.1.1 What it means 5.5.1.2 How to do it 5.5.1.3 What to test 5.5.1.4 References 5.5.2 Tab Order [TAB_ORDER] Create a... 5.5.2.1 What it means 5.5.2.2 How to do it 5.5.2.3 What to test 5.5.3 Labels [CONTROL_LABELLING] ... [CONTROL_POSITION] P... 5.5.3.1 What it means 5.5.3.2 What to test 5.5.3.3 References 6 Conformance and mobileOK 6.1 Classes of Products 6.2 Extensibility A Sources (Non-Normative) B Acknowledgements (Non-Normative) C References (Non-Normative) C.1 MWI References Scope Techniques mobileOK C.2 Sources WCAG iMode Opera OpenWave Nokia-MP Nokia-VR LSD C.3 Device Independence DIP DCODI DIGLOSS C.4 Web, Protocols and Languages WebArch XML XHTML-Basic CSS HTTP1.0 HTTP1.1 UTF-8 CHARSET1 CHARSET2 C.5 Other References UAPROF TOMCAT APACHE IIS T-MOB MF
or

Refinement of the section concerned:

Status:

open proposal pending resolved_yes resolved_no resolved_partial other assigned to Nobody

Type: substantive editorial typo question general comment undefined

Resolution status:

Response drafted Resolution implemented Reply sent to commenter

Response status:

No response from Commenter yet Commenter approved disposition Commenter objected to disposition
Commenter's response (URI):

Comment:

5.4.9 Style sheets. The first two practices are:

"Use style sheets to control layout and presentation,
unless the device is known not to support them."

"Organize documents so that they may be read without style
sheets."

If I read these practices carefully, I think they probably
don't conflict. But I think some readers might read these too
quickly as "Use style sheets" and then "Don't use style
sheets." For instance, suppose I want to achieve a particular
layout. The right thing to do is to use style sheets (practice
1) but if I use a feature in a particular way so that turning
the feature off would cause the content to become unreadable
(practice 2), then I probably should not use the feature. But
then have I violated practice 1 by not using it? I can't quite
put my finger on it, but I think there is some dependency
between the practices that needs to be made more explicit. For
instance, I could read them as:

Use style sheets to control layout and presentation

(1) unless the device is known not to support them,

AND

(2) do so in a manner such that when turned off,
the content remains readable.

I wonder if this is an improvement:

"Use style sheets to control layout and presentation,
unless the device is known not to support them."

"When using style sheets to control layout and presentation,
organize content so that if the style sheets are turned off
or not supported, the content may still be read."

It is probably too long. Nonetheless, I think a slight
clarification would help avoid confusion.

Related issues: (space separated ids)

WG Notes: ACTION-265 refers, Updated in 1y.

Resolution: We agree and have reworded the best practice to: "Organize documents so that if necessary they may be read without style sheets."

(Please make sure the resolution is adapted for public consumption)