Re: Combine 79, 78, and 74 SCs? (was Re: Mechanism Disclaimer)

Hi David,

Lots of progress whilst I didn't check email this weekend!

> For those web technologies that allow user agents to change *any or all* of the following: 
> - foreground and background colors, 
> - font family​, 
> - spacing between characters, words, lines, or paragraphs, 
> nothing is done in the content to prevent these modifications. 

The "nothing is done" doesn't sound like something from WCAG, and surely a web technology doesn't allow a user-agent to change something: that's up to the user-agent? 

If an author doesn't "prevent" a modification (which they can't anyway), but some content disappears or functionality doesn't work, does that fail? It is assuming intent, which doesn't lead to a true/false conclusion.

I'm still thinking it's best to orient the SC text around the content and what the content needs to enable. 

Taking my previous font-family example and updating it:
"Adaptable presentation: Overriding the font-family, colors or spacing used on a web page does not cause loss of content or functionality."

Secondarily, do we really have to have all SCs including PDF (and Flash/Silverlight?) techniques? I don't think that's a good thing for 2017 (compared to 2008).

However, if that is the case, it might help to separate out Spacing, as common PDF UAs can do font & colours.



PS. I outlined 4 levels of user-adaptation on a task force email, it is worth others thinking about it to, especially for COGA. These are different ways the SCs can impact layout and author effort:
1. Adaptation that works under the author-controlled styling/scripting in a default browser, such as Resize text or the new Resize content.

2. Adaptation that over-rides author styles but doesn’t impact layout, such as changing colors or font-family.

3. Adaptation that will likely break or override layouts, such as Linearisation or Spacing. Also several from COGA that I’ve seen, such as adding icons to the text.

4. Personalisation where the website would have to provide options for the user, or in some way work with the user’s settings in a pre-agreed fashion.

Levels 2 & 3 have some overlap, where a really odd font might break a layout, or a minor change of spacing might not. 

Received on Monday, 23 January 2017 01:40:33 UTC