On Tue, 18 Mar 2008, Christoph P�per wrote: > > > > + <h4>Attributes common to <code>td</code> and <code>th</code> > > elements</h4> > > > > + <p>The <code>td</code> and <code>th</code> elements may have a <dfn > > + title="attr-tdth-colspan"><code>colspan</code></dfn> content > > + attribute specified, whose value must be a <span>valid non-negative > > + integer</span> greater than zero. > > Isn't that the description of a valid positive integer? If that term is > not used or defined yet, why not?
Because "positive" is confusing to people. Some people (including me) think that 0 is positive. > > + <p>The <code>td</code> and <code>th</code> elements may also have a > > + <dfn title="attr-tdth-rowspan"><code>rowspan</code></dfn> content > > + attribute specified, whose value must be a <span>valid non-negative > > + integer</span>. > > Why can |rowspan|, unlike |colspan|, be 0, but is then also normalised to 1? It's not normalised to 1, is it? I don't understand. On Wed, 19 Mar 2008, Michael Enright wrote: > On Tue, Mar 18, 2008 at 2:23 PM, Christoph P�per > <[EMAIL PROTECTED]> wrote: > > > + <h4>Attributes common to <code>td</code> and <code>th</code> > > > elements</h4> > > > > > > + <p>The <code>td</code> and <code>th</code> elements may have a <dfn > > > + title="attr-tdth-colspan"><code>colspan</code></dfn> content > > > + attribute specified, whose value must be a <span>valid non-negative > > > + integer</span> greater than zero. > > > > Isn't that the description of a valid positive integer? If that term > > is not used or defined yet, why not? > > The mathematical definitions of positive and negative integers exclude > zero, but the less-expert reader might not realize that zero is not > valid for colspan unless it is made explicit. "integer greater than > zero" would be one way to say it. Otherwise "positive non-zero integer"? I think the current text is fine. -- Ian Hickson U+1047E )\._.,--....,'``. fL http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,. Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
