Re: Horizontal Scrolling for Reading Text: Why it doesn't work.

Dear Sean,
That is correct, but effective accommodation doesn't really begin until you
reach 300% (or you narrow the width of the field to about 1/30. The number
200% is a leftover from the paper era. It was almost impossible to create
large print books at more than 200%. It just took too much  paper.

You still find well meaning sites like the American Printing House for the
Blind that recommend using Braille if you need 280%. Since WCAG 2.0,
responsive web design has demonstrated the ability to enlarge by up to
500%. I requires a little arithmetic to see this. When we transform a site
that looks good on a 13 inch laptop to a 4.7 inch phone we accommodate for
2 shrinking processes. Reduction of width, and rotation to portrait mode.
The combined adjust is equivalent to shrinking text by 1/5.   If we stayed
on the laptop the same transformation could support 500% enlargement.

Technology has changed since WCAG 2.0. What seemed out of scope then is
mainstream technology. Right now there is no screen magnification system
that can enlarge at 300% with word wrapping and remain fully functional.
That is why we need to expand the size range with word wrapping.

Wayne





On Wed, Feb 1, 2017 at 4:15 PM, Sean Murphy (seanmmur) <seanmmur@cisco.com>
wrote:

> Wayne,
>
>
>
> Interesting research and if I have read it correctly. As the WCAG 2.0 only
> recommends 200% and based upon your research. There is no difference
> between wrap and zoom. Should the SC be updated or change to include wrap
> magnification to permit a higher level?
>
>
>
> Sean Murphy
>
> Accessibility Software engineer
>
> seanmmur@cisco.com
>
> Tel: +61 2 8446 7751 <+61%202%208446%207751>       Cisco Systems, Inc.
>
> The Forum 201 Pacific Highway
>
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>
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>
> Australia
>
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>
>  Think before you print.
>
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>
> *From:* Glenda Sims [mailto:glenda.sims@deque.com]
> *Sent:* Thursday, 2 February 2017 10:50 AM
> *To:* Wayne Dick <wayneedick@gmail.com>
> *Cc:* W3C WAI ig <w3c-wai-ig@w3.org>; public-low-vision-a11y-tf <
> public-low-vision-a11y-tf@w3.org>; Jim Allan <jimallan@tsbvi.edu>; Joshue
> O Connor <josh@interaccess.ie>; Andrew Kirkpatrick <akirkpat@adobe.com>
> *Subject:* Re: Horizontal Scrolling for Reading Text: Why it doesn't work.
>
>
>
> Wayne,
>
>
>
> I'm deeply grateful for your research on this!  I always knew it was a
> pain, but I did not truly understand how bad it was until I experienced it
> myself.  I want the world to understand this now!
>
>
>
> G
>
>
> glenda sims    |   team a11y lead   |    deque.com    |    512.963.3773
> <(512)%20963-3773>
>
> *web for everyone. web on everything.* -  w3 goals
>
>
>
> On Wed, Feb 1, 2017 at 5:01 PM, Wayne Dick <wayneedick@gmail.com> wrote:
>
> If you would want to understand why horizontal scrolling is really not the
> following gives a quantitative explanation. Nobody has ever done this
> analysis before.
>
> http://nosetothepage.org/Fitz/2dScroll.html
>
> You cannot make an informed judgement of Resize Content and Linearize
> without considering this proof of extreme user need. Two dimensional
> scrolling of blocks of text is not just annoying it is a profound
> disruption of the reading process.
>
> Wayne
>
>
>
> Wayne
>
>
>
>
>
>
>
>