Hi,
There is a typo in http://www.arduino.cc/en/Reference/Millis , section "Tip" :
Note that the parameter for millis is an unsigned long, errors may be generated if a programmer tries to do math with other datatypes such as ints.
Should read :
Note that the return value for millis is an unsigned long, errors may be generated if a programmer tries to do math with other datatypes such as ints.
A minor correction, but I'm sure it could confuse a couple of new users.
By the way I hope this is the right place, to me it doesn't really seem to fit but this subforum is linked on every pages :
Corrections, suggestions, and new documentation should be posted to the Forum.