Note These keyboard shortcuts are available when the Use advanced tools general preference is selected. See Using advanced tools.
To perform  | Press  | 
Step Over  | F5  | 
Step Into  | F6  | 
Step Out  | F7  | 
Run to Breakpoint  | Option-F8  | 
Halt Script  | 
  | 
Set Next Step  | Shift-  | 
Set/Clear Breakpoint   | 
  | 
Remove Breakpoints  | Shift-  | 
Edit Script  | 
  |