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1.4 delivery context

From: Charles McCathieNevile <chaals@opera.com>
Date: Wed, 08 Feb 2006 15:08:23 +1200
To: bpwg-comments <public-bpwg-comments@w3.org>
Message-ID: <op.s4my39w4wxe0ny@widsith.local>

Several issues:

1. Meaning

The text does not make it clear whether the characteristics are minimum  
specifications, or actual specifications that should be assumed. For  
example should a developer assume in the absence of other information that  
the width of a device is 120 px, or that there may be no more than 120 px  
width available.

We believe the latter should be the case.

2. Colours:

There are a number of interpretations of "websafe" colours - please  
provide a reference that unambiguously states which colours are expected  
to be available.

3. Security

In order to build commercial services on the web, secure connections are  
necessary. In addition, these are widely implemented already. Is there no  
requirement to support https connections in the mobile space as a best  
practice?

4. HTTP

It is not clear that any transport protocol is guaranteed on the device.  
Given the requirements to support the regular web, and in particular such  
things as 30x HTTP responses, it would be appropriate to specify a level  
of HTTP support in the default characteristics.

5. Style sheets

XHTML Basic does not include any support for internal styles. It makes  
sense, given the problems of latency that are a key constraint in the  
mobile space, to mandate support for internal styling, but it is not clear  
 from the current wording what support can be expected (and therefore, as  
an implementor, what support we are implicitly being required to provide).

Cheers

Chaals

-- 
Charles McCathieNevile                     chaals@opera.com
   hablo español  -  je parle français  -  jeg lærer norsk
      Peek into the kitchen: http://snapshot.opera.com/
Received on Wednesday, 8 February 2006 04:08:41 GMT

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