Charts used for IFR flights contain an abundance of information regarding locations of waypoints, known as "fixes", which are defined by measurements from electronic beacons of various types, as well as the routes connecting these waypoints.
Navigation charts for Instrument Flight Rules (IFR) flights include a wealth of information regarding waypoints, called "fixes," which are determined by measurements from different types of electronic beacons.  The charts also show the routes between these waypoints.