reftex: Reference Info

 
 3.5 Reference Info
 ==================
 
 When point is idle for more than ‘reftex-idle-time’ seconds on the
 argument of a ‘\ref’ macro, the echo area will display some information
 about the label referenced there.  Note that the information is only
 displayed if the echo area is not occupied by a different message.
 
    RefTeX can also display the label definition corresponding to a
 ‘\ref’ macro, or all reference locations corresponding to a ‘\label’
 macro.  SeeViewing Cross-References, for more information.