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**To**:*math-font-discuss@cogs.susx.ac.uk***From**:*Justin Ziegler <ziegler@goofy.zdv.uni-mainz.de>***Date**: Fri, 20 Aug 1993 16:01:11 +0000

<<<<<<<< I think this leaves unanswered Justin's original question, which boils down (I believe) to: why is the height of textstyle sum zero and depth large, rather than height large and depth zero? (The third possibility, height = 1/2 total + math axis, depth = 1/2 total - math axis, might have been rejected by Knuth in order to avoid building into cmex a dependency on the cmsy value of math axis. But I am not sure there is a great deal of value in this, since extension and symbol fonts probably need to be design-compatible in other respects, e.g. style of braces). Michael Downes mjd@math.ams.org (Internet) >>>>>>> Yes my question is still unanswered. I thought there were some TeXperts on this list ? My questions are: Why are the bigoperators in cmex set under the baseline? Would things still work the same if they were set over the baseline? I think i know why delimiters are set under the base line, but I would like to know why bigops are set under the baseline. JZ

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