Lost looking for PWM library

Thanks for the quick reply.

Those instructions don't seem to be working for me. I wonder if it is because I am on a Mac?

When I go to the apps folder, I click on the Arduino.app with my control key held down. I get a menu with the option "Show Package Contents"... which I then chose.

Then the following window pops up.

I don't see the stuff there, and spotlight doesn't help either? What have I done wrong?

Thanks,

Bill