Some techniques for guideline 1

Write output to and take input from standard system APIs rather than direct
from hardware controls where possible. This will enable the I/O to be
redirected from or to assistive technology devices - for example, screen
readers and braille devices often redirect output (or copy it) to a serial
port, while many devices provide character input, or mimic mouse
functionality. The use of generic APIs makes this feasible in a way which
allows for interoperability of the assistive technology with a range of
applications.


--Charles McCathieNevile            mailto:charles@w3.org
phone: +1 617 258 0992   http://www.w3.org/People/Charles
W3C Web Accessibility Initiative    http://www.w3.org/WAI
MIT/LCS  -  545 Technology sq., Cambridge MA, 02139,  USA

Received on Friday, 18 June 1999 11:40:43 UTC