The third, fourth, and fifth columns are for Action, Width, and Units respectively. Again, clicking on the action cell will provide a drop-down list of all the actions available for this destination. For the I/O pin, there are choices available of Set High, Set Low, Toggle High to Low, Toggle Low to High, Pulse High, or Pulse Low. The columns Width and Units are only available for Pulse High or Pulse Low action. Enter a decimal number for the width and select the time unit.