• in front of a cow, the action key milks it
• in front of the stump with the shotgun, it fires the shotgun
• in front of "milk storage," dumps collected milk
  

Hints
Don't let cows get too full.
Don't over-milk cows.
Dump milk bucket at the "milk storage" when full.
In order to milk faster, you may want to hold down the space bar.
Move to stump to fire gun at the cow-tipper.
If you lose too many cows (lives), the game ends...
If arrow keys don't work, use these keys: i = up, k = down, j = left, l = right.

Milking and the Bucket
You can only collect so much milk in your bucket before you have to empty it at the milk storage. The amount of milk you've collected so far is displayed on a meter at the bottom of the screen. Be careful not to let the cows get too full. And don't over-milk them either - they don't like it. Moderation in all things!

Scoring
You only get points (or "funds") by dumping the milk you collected into the "milk storage." In order to award the greedier folk out there, you get an extra bonus for dumping a full bucket of milk.

Lives
You can only lose a certain number of cows before the cows decide to take matters into their own hands (err hooves?). When that happens, the game ends.

The Interloper
Oftentimes, a childish interloper will stride across the top of the screen. You can scare him away by firing the shotgun. If he manages to get across the screen, he'll steal some of your funds for munchie money, or perform one of the Midwest's most beloved sports - cow tipping. Unfortunately, tipped cows are so scared that they can't produce any more milk (this happens in real life).