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I have a 500 p textbook in LaTeX that I wrote a year ago. After migrating to a new computer (Win 7) I get the error message "!You can't use a prefix with '\begingroup'" on a line \Newassociation{hint}{Hint}{hint} related to the package Answers. When I created the minimal working example below, the ...

\raggedbottom seems to work, also in two-column mode. ALmost all of the ugly paragraph separations disappeard. I will investigate the remaining ones. Thanks.

Thank you. I do use documentclass... but before posting the problem I went back to Lamports book to get ideas of what the problem could be...and then I reverted to old style LaTeX documentstyle by mistake.

I want to have a short command for “degree Celsius” and have tried different ways, but they either give me spaces between oC and punctuation marks, or no spaces between oC and the following word. See my mini-example below. How can I make this work (or: where can I find such a command ...

I am writing a two-column document and I find that there are large spaces between some paragraphs. I believe it is because LaTeX wants all columns be filled with text all the way down, but I would prefer to have a “ragged” bottom and keep all vertical separations between paragraphs the same. Is ...