Lemon Sauce II

4 cups Sugar

6 tbs Cornstarch

6 cup Boiling Water

3/4 cup Juice of Lemon

3/4 cup Margarine

1/4 tsp Salt

*** Mix corn starch and sugar. Add to boiling water, stirring vigorously. Cook over medium heat until thickened. Remove from heat. Add lemon juice, butter, and salt.