Scottish Shortbread I

Preheat oven to 350 degrees F (175 degrees C).
In a large mixing bowl, cream the butter and the sugar. Slowly add the flour and salt, mixing well. Roll out dough with a rolling pin until it is 1/4 inch thick. Cut into desired shapes using cookie cutters. Place on cookie sheet and prick with a fork.
Bake for 5 to 8 minutes, or until light brown at the edges.