From: Dave Raggett <dsr@w3.org>

Date: Mon, 16 Nov 1998 16:43:57 +0000 ()

To: James Ramsey <jjramsey_6x9eq42@yahoo.com>

cc: www-math@w3.org

Message-ID: <Pine.WNT.3.95.981116163243.-179955C-100000@hazel.hpl.hp.com>

Date: Mon, 16 Nov 1998 16:43:57 +0000 ()

To: James Ramsey <jjramsey_6x9eq42@yahoo.com>

cc: www-math@w3.org

Message-ID: <Pine.WNT.3.95.981116163243.-179955C-100000@hazel.hpl.hp.com>

On Fri, 13 Nov 1998, James Ramsey wrote: > I thought of another way to attack the problem of making source code > containing MathML readable. Recommend, or perhaps even require, MathML > equation editors to preface their MathML output with comments that > specify what the MathML code means, e.g.: > > <!--Output of Foo Equation Editor > The MathML syntax means: > > x^2 + 3*x + 5 = 40 > x^2 + 3*x + 5 - 40 = 40 - 40 > x^2 + 3*x - 35 = 0 > > --> > > . . . MathML marked-up eqs . . . > > This way, even if the MathML code in the source document isn't too > readable, the comments can tell the reader of the source what the > MathML tags are supposed to say. Also, if the comments are generated > by the equation editor rather than typed in by the author directly, it > will help insure that the content of the comments actually reflects > the content of the MathML, avoiding problems like author typos, > forgetting to change the comments when the MathML is reedited, etc. > > You might have to come up with conventions for how to indicate such > things as integration, differentiation, special characters, etc. The > conventions could probably be borrowed from eqn, Mathematica syntax, > and such. For instance things like: Your ideas are very much along the same lines as my work on EzMath, for instance the following: * y=ax^2+bx+c * integral from 0 to pi/2 of sin ax wrt x * x = {-b plus or minus sqrt {b^2 - 4ac}}/2a * 2nd derivative of y wrt x = 2a are working examples from the EzMath utility, see: http://www.w3.org/People/Raggett/EzMath EzMath makes it easy to create MathML content tags. For the next revision, I will include the EzMath notation as the alternate text using the math element's "alttext" attribute. It should be straightforward to also generate a gif image for the "altimg" attribute, both of which are defined by The MathML Recommendation see: http://www.w3.org/TR/REC-MathML/chapter7.html#sec7.1.2 Regards, -- Dave Raggett <dsr@w3.org> http://www.w3.org/People/Raggett tel/fax: +44 122 578 2984 (or 2521) +44 385 320 444 (gsm mobile) World Wide Web Consortium (on assignment from HP Labs)Received on Monday, 16 November 1998 11:40:55 GMT

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