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Re: content mark-up: operators vs. relations?

From: David Carlisle <davidc@nag.co.uk>
Date: Thu, 28 Oct 1999 09:38:33 +0100 (BST)
Message-Id: <199910280838.JAA16858@nag.co.uk>
To: devlinh@nwu.edu
CC: www-math@w3.org

> It is an error to enclose a relation in an element other than reln.

> But the example immediately following and some earlier examples show relns
> inside applys.

but a `reln' is not a `relation element' according to the text of the
spec. So you are supposed to use <reln/> to apply <lt/> to two values, but
if you want to combine two such relations with <and/> then you need to
<apply/> <and/>.

The plan is that this situation will be improved in MathML2, although
the details are not finalised.

The current best guess is that the restriction on not using <apply/>
with `relation' elements will be dropped and so you will be able to
uniformly use <apply/> (with reln being kept for largely historical
reasons).

David
Received on Thursday, 28 October 1999 04:42:39 GMT

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