- From: <schwer@us.ibm.com>
- Date: Mon, 11 Oct 1999 14:47:12 -0500
- To: ij@w3.org, w3c-wai-ua@w3.org
After reading checkpoints 1.1 and 1.6, the clarity problem is due to a lack of definitions. Too much is left up to the assumption of the reader. So, my suggestion is to make the following four changes: 1. Modify the glossary definition of device independence. Device Independence The ability to make use of software via any input or output device supported by the operating system. These supported devices consist of standard input and output devices. User agents should follow system conventions and use standard APIs for device input and output. 2. Create and add the following glossary definition: Standard Input and Output Devices: These devices are those which are expected for normal use by the operating system and its standard user interface. Operating systems provide standard API to these devices to be used by applications for expected inter operability between the operating system and the application environment. For example, today's personal computer desktop operating systems expect to use mouse and keyboard devices as the standard input mechanism. For a palm computer the standard input may be the stylus and buttons. The expected, standard output on these systems consists of the display and/or an audio output device. 3. Modify Checkpoint 1.1 1.1 Ensure that all functionality offered through the user interface may be operated through standard input device APIs supported by the operating system. [Priority 1] Standard input device APIs are those used by the operating system to support the use of expected, <A Link to Standard Input and Output Devices Definition>standard input and output devices</a>. 4. Modify Checkpoint 1.6 1.6 Ensure that all messages to the user (e.g., warnings, errors, etc.) are available through standard output device APIs supported by the operating system. [Priority 1] Standard output device APIs are those used by the operating system to support the use of expected, <A Link to Standard Input and Output Devices Definition>standard input and output devices</a>. For instance, ensure that information about how much of a page or video clip has been viewed is available through output device APIs. Proportional navigation bars may provide this information visually, but the information must be available to users relying on synthesized speech or braille output. Rich Schwerdtfeger Lead Architect, IBM Special Needs Systems EMail/web: schwer@us.ibm.com http://www.austin.ibm.com/sns/rich.htm "Two roads diverged in a wood, and I - I took the one less traveled by, and that has made all the difference.", Frost
Received on Monday, 11 October 1999 15:49:27 UTC