.COMPILE - Compiles programs without running.
.CONTINUE - Continues execution of a stopped program.
.EDIT - Opens files in editor windows of the IDLDE (Windows and Motif only).
.FULL_RESET_SESSION - Does everything .RESET_SESSION does, plus additional reset tasks such as unloading sharable libraries.
.GO - Executes previously-compiled main program.
.OUT - Continues execution until the current routine returns.
.RESET_SESSION - Resets much of the state of an IDL session without requiring the user to exit and restart the IDL session.
.RETURN - Continues execution until RETURN statement.
.RNEW - Erases main program variables and then does .RUN.
.RUN - Compiles and executes IDL commands from files or keyboard.
.SKIP - Skips over the next n statements and then single steps.
.STEP - Executes one or n statements from the current position.
.STEPOVER - Executes a single statement if the statement doesn't call a routine.
.TRACE - Similar to .CONTINUE, but displays each line of code before execution.