Note: TrackChanges is not part of TeX Live, and hasn't been updated in a while. Instead, changes.sty, a package for the same purpose, is available in TeX Live and more recent. You can find the example template here.
TrackChanges is a package for collaboratively editing LaTeX documents which allows multiple editors to make changes & add annotations to a document.
Here we present a short example of it's use, which you can use as a template to get started.
This example shows how to write simplified Chinese characters in LaTeX with the CJKutf8 package. WriteLaTeX includes a full set of fonts for simplified Chinese, and we use utf-8 encoding, so you can type simplified Chinese characters directly into your LaTeX source code and have them appear in the output.
This is an example for re-creating gnuplot charts with tikz on LaTeX, made possible by adding gnuplot-lua-tikz.sty and gnuplot-lua-tikz-common.tex to your project. (These files can be generated by invoking lua gnuplot-tikz.lua style where gnuplot-tikz.lua can be found in $GNUPLOT/lua/gnuplot-tikz.lua.
(This will work with all engines, not just LuaLaTeX!)
A minimal example of rotated text in LaTeX. All you need is
in the preamble, and
around the text you wish to rotate (in this case, by an angle of 45 degrees).
This example was originally posted at: http://texblog.org/2013/10/01/rotate-an-image-table-or-paragraph-in-latex/
Tom at TeXblog