This appendix is a reference for dip, pppd, and chat. These tools are used to create dial-up IP connections for the Point-to-Point Protocol (PPP). dip and chat are both scripting languages. Creating a script that initializes the modem, dials the remote server, logs in, and configures the remote server is the biggest task in configuring a PPP connection. Chapter 6 provides examples and tutorial information about all three of the programs covered here. This appendix provides a reference to the programs.