Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Open firstanim_flowmetrics.xml generated by your simulation program.”

A block of code is set as follows:

NodeContainer nodes;
  nodes.Create (2);
 PointToPointHelper pointToPoint;
  pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("1Gbps"));
  pointToPoint.SetChannelAttribute ("Delay", StringValue ("1ms"));

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

$ ./ns3 run scratch/pkt_first_anim

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Next, click the Save button.”

Tips or important notes

Appear like this.