latex
Table of Contents
1. problems
1.1. org-mode latex preview
1.1.1. ulem.sty missing
This is often case on freshly installed system. Reason is missing texlive-latex-extra package(at least for ubuntu).
sudo apt install texlive-latex-extra resolves it.
2. tips
2.1. new line
new line in latex is \\. example: \(1\\2\)