Simplify mfrac layout. (Don't try to force the division line to be on the baseline so that it is always raised to the correct place by a vertical align of .25em; instead, just shift the whole stack appropriately. This may cause misalignment if we can't measure the parts exactly, however, but should speed things up a bit.)
Simplify mfrac layout. (Don't try to force the division line to be on the baseline so that it is always raised to the correct place by a vertical align of .25em; instead, just shift the whole stack appropriately. This may cause misalignment if we can't measure the parts exactly, however, but should speed things up a bit.)

GerHobbelt/MathJax,wikimedia/MathJax,jinntrance/mathjax,thomasjm/MathJax,jinntrance/mathjax,thomasjm/MathJax,thomasjm/MathJax,thomasjm/MathJax,dpvc/MathJax,thomasjm/MathJax,GerHobbelt/MathJax