--- a/components/PID/PID_v1.c	Sat Oct 20 13:23:15 2018 +0200
+++ b/components/PID/PID_v1.c	Sat Oct 20 17:09:48 2018 +0200
@@ -29,7 +29,7 @@
 double		*mySetpoint;		// PID, freeing the user from having to constantly tell us
 	        	                // what these values are.  with pointers we'll just know.
 
-unsigned long	lastTime;
+unsigned long	lastTime;		///< Last time of the time window.
 double		outputSum, lastInput;
 
 unsigned long	SampleTime;