/**

 * \mainpage An Introduction to ns-3

 *

 * The ns-3 library is split across multiple modules:

 *     - core: located in src/core and contains a number of facilities which

 *       do not depend on any other module. Some of these facilities are

 *       OS-dependent.

 *     - simulator: located in src/simulator and contains event scheduling

 *       facilities.

 *     - common: located in src/common and contains facilities specific

 *       to network simulations but shared by pretty much every model

 *       of a network component.

 *

 * The "core" module contains:

 *    - a Functor class: ns3::Callback

 *    - an os-independent interface to get write-only access to a file: ns3::SystemFile

 *    - an os-independent interface to get access to the elapsed wall clock time: ns3::SystemWallClockMs

 *    - a class to register regression tests with the test manager: ns3::Test and ns3::TestManager

 *

 * The "simulator" module contains:

 *    - a time management class to hold a time and convert between various time units: ns3::Time

 *    - a scheduler base class used to implement new simulation event schedulers: 

 *      ns3::Scheduler and ns3::SchedulerFactory

 *    - a simulator class used to create, schedule and cancel events: ns3::Simulator

 *

 * The "common" module contains:

 *    - a trace container class to hold lists of trace sources: ns3::TraceContainer

 *    - a Pcap file serializer which can generate pcap files from simulation packets: ns3::PcapWriter

 */

/**

 * \namespace ns3

 * \brief Every class exported by the ns3 library is enclosed in the

 * ns3 namespace.

 */

/**

 * \defgroup constants

 * \brief Constants you can change

 */