On Thu, 6 Sep 2012, Troy Henderson wrote:

It is my understanding that \abovedisplayskip and \belowdisplayskip should adjust how much (rubber) spacing that is allowed between display math formulas. I have attached a ConTeXt file (bug.tex) that seems to indicate that setting these skips does not affect this (rubber) spacing. I have also translated this ConTeXt file line-by-line to a LaTeX file (bug.ltx) and attached it.

Both files produce a PDF (using `context bug.tex` and `pdflatex bug.ltx`) in which the spacing between the formula changes from page 1 to page 2 simply by adding the final formula. However, by changing \adjustdisplay{0} to \adjustdisplay{1}, the LaTeX file produces a 3 page document where the spacing between formula does not change (as expected) on the first two pages and thus requires a third page to typeset the final formula. However, making this same adjustment in the ConTeXt file does not seem to affect the output.

I would appreciate any thoughts as to why this is happening, and I would equally appreciate a solution to keeping the spacing the same in the ConTeXt file and thus bumping that last formula to a third page.

ConTeXt uses spacebefore and spaceafter keys to adjust the spacing around formulas. The values of these keys are fed to `\blank[...]` so they can be any value that `\blank[...]` accepts (none, small, medium, big, etc., or a valid TeX dimen) So, you should use something like \setupformulas[spacebefore=..., spaceafter=...] or if you only want to change the space around specific formulas \defineformula[big][spacebefore=big,spaceafter=big] and then use \startbigformula ... \stopbigformula. Aditya