Long equations in assemblage in HTML

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Sean Fitzpatrick

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May 1, 2026, 9:20:59 AM (8 days ago) May 1
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An issue in APEX reported by Karl-Dieter:

We have a quick reference in the appendix with various formulas, etc. Right now each item is in an assemblage. (Maybe this isn't the best choice?)

When an equation is long, it spills out of the box drawn around the assemblage, as seen here: 

Assemblage: Simpson’s Rule:

If the screen is narrow (e.g. on mobile) the equation fits into a slider that's contained in the bounding box, but as soon as the screen widens, the equation spills out. 

Is this something than can be fixed in CSS?

Or is this a case where the answer is either "don't author long formulas" or "don't use assemblage"?

Rob Beezer

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May 1, 2026, 9:37:41 AM (8 days ago) May 1
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Just don't author assemblage, don't author long equations, and don't use MathJax 3.

Seriously, MathJax 4 is going to roll out over the next few weeks. I think it has new features for line-breaking. No idea if they will be useful, or if we will configure them. But I'm not too interested in pursuing this while we are still on MJ3.

But do remind me to pursue this soon after a CLI release has MJ4, and perhaps we can do some testing with some debugging switches? Can you wait?

Rob

Sean Fitzpatrick

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May 1, 2026, 9:41:03 AM (8 days ago) May 1
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I can wait. Reported by KDC yesterday but my experience has been that half my students don't even realize the appendix exists. 

The issue is aesthetic and doesn't affect usability.

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kcri...@gmail.com

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May 1, 2026, 7:48:30 PM (8 days ago) May 1
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I can wait. Reported by KDC yesterday but my experience has been that half my students don't even realize the appendix exists. 

The issue is aesthetic and doesn't affect usability.


Indeed!  Only faculty look at appendices.   I only reported on the Apex GH because I didn't realize it was a more general issue, so I'm glad Sean reached out here. 
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