The Ever-Evolving Arrow: Universal Control Symbol
“Symbols and icons can be both friend and enemy to UX designers. They can convey a great deal of information in the span of just a few pixels or utterly confuse users, depending on the context. The careful application of icons, however, can greatly enhance software, enabling quick access to a feature or function, using a minimal amount of screen real estate.” (Jonathan Follett – UXmatters)