# LyX

## Install a New Package on MacOS X Lion

First install the package where TeX can find it. Normally you put it in `~/Library/`. On Lion `Library` is hidden so you need to unhide it first.

``````chflags nohidden ~/Library/
cd ~/Library/
mkdir texmf
mkdir texmf/tex
mkdir texmf/tex/latex
``````

Unpack the package (e.g. applekeys) in the `latex` folder.

Check that `LyX` can find it by checking `Tools -> TeX Information`. Do `Rescan` if needed.

To use the package in a document, the package needs to be included in preemble as well. Add the following in `Documents -> Settings -> Latex Preemble` and `Save`.

``````\usepackage{applekeys}
``````

Now you can use e.g. `\cmdkey` (in a TeX segment) to print a apple command key.