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This is a LaTeX problem and has to be solved at that level. Org mode delegates all the formatting to it for PDF output. There are many tips and tricks that can be used to get LaTeX to do a better job of line breaking, but the most important rule is to not give it long things that it cannot break - and if you have to, you have to help it to decide where to ...


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For HTML, you can add CSS to hide borders completely. By default, I get a border width of 2 and a rules setting of group. You can override these like this: * foo #+ATTR_HTML: :border 0 :rules none | a | b | |---+---| | 1 | 2 | | 3 | 4 | For LaTeX/PDF, by default I get just an \hline corresponding to the hline that I have in the table separating the header ...


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In order to use #+LATEX_CLASS: homework you must have added an entry to the variable org-latex-classes - otherwise you would have gotten an Unknown LaTeX class 'homework' error. Presumably you have already done this since you don't get that error. To add things to the LaTeX preamble (the part before \begin{document} you need to use #+LATEX_HEADER. E.g. to ...


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