1.1 Lua program window 1.1.1 Lua programming window Double-click on the Lua Program to open the Lua programming window as shown in the figure below. Toolbar Programming area Toolbar function description for the Lua programming window is as follows: 5 Toolbar for the Lua programming window Symbol Name Hotkey Description Start online program debugging F5 Enable online debugging of the Lua program; the debugging target can be the HMI or simulator. Stop program debugging Shift+F5 Stop the current Lua program in execution.