Add line numbers using lineno.sty in RevTex 4

1. Download the lineno Latex package.
2. Unpack it (unzip lineno.zip) and copy all lineno/*.sty files into the directory that contains your Latex document.
3. In the Latex preamble include the line
   \RequirePackage{lineno}
   before the \documentclass{...} command.

   Note: this is necessary due to incompatibilities between the lineno package and RevTex. If you are not using RevTex to prepare your document you can also use the standard way: \usepackage{lineno}

4. Line numbers can be activated by adding the line
   \linenumbers
   after \begin{document}

Firefox Adblock Extensions

Extensions are small add-ons that add new functionality to the Firefox web browser. They allow you to customize Firefox to fit your own needs and preferences. Here’s a list of the most popular and useful extensions for blocking ads:

• Adblock Plus
  Install Adblock Plus and get rid of ads and banners on the internet. You can create your own filters and also block flash and java elements. Or choose a filter subscription and most advertisements will be blocked fully automatically.

  Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.