The crossword solution for the term 'GO ON TO SIGNAL' is CUE. CUE is a three-letter word that is used to indicate that an action should be taken or that something should happen. It is often used in theatrical performances, where it is used to signal actors to start their lines or to move to a certain part of the stage. It can also be used in other contexts, such as when a speaker is about to begin a presentation or when a musician is about to start playing a song.