...
Starts and names the macro stopwatch. Prints the current date and time. Only one stopwatch can be used at a time - the name is used only for the purpose of printing meaningful information. Starting a new stopwatch stops an existing stopwatch.
none stopwatch_laptime ( string )
Prints the laptime since the previous call to stopwatch_laptime() , or from stopwatch_start() if there is no previous laptime. The string argument is used in the printout to identify the laptime.
...