2 – User interface—Automation keysTASCAM DM-24 Reference Manual 19undo/redo function of the library. This key is the 2NDF. key (above and to the left of the rotary encoders).These second functions are labeled below the key ininverse lettering:To use these second functions, press and hold the2ND F. key and press the key whose second functionis to be used.The AUTOMATION UNDO key is used in automationoperations in order to undo any unwanted changes toautomated mixes.The operation of the automation facilities isexplained in a separate manual.Automation statusAs explained in the automation manual, the automa-tion engine can be turned on or off in the main auto-mation screen.When the automation engine is enabled, the wordAUTO appears at the top of the screen, together withany automation mode currently enabled.Press andhold this keyto accessthis function(KEEP)and pressthis key