In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text are shown as follows: "You may need to change 4.2.2 to match the version you have downloaded. This also assumes that the tarball was downloaded into your Downloads folder."

A block of code is set as follows:

standardHost: StandardHost {
@display("p=59,215");
IPForward = true; //Turn IP forwarding on
numTcpApps = 5; //Set the number of TCP Apps on this node to 5
        }

Any command-line input or output is written as follows:

sudo apt-get update && sudo apt-get install build-essential
gcc g++ bison flex perl 
tcl-dev tk-dev blt libxml2-dev 
xlib1g-dev openjdk-6-jre doxygen graphiz

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "The benefit of using the Edit Parameters form is that you can see all the parameters that belong to the submodule you are observing and their default values".