Mix together:
 2 cups plain flour
 2 cups sugar
 1 tsp salt
 2 sticks margarine
 3 tbsp cocoa
 1 cup water
 Mix all of the above together, and stir in:
 2 eggs
 1 tsp baking soda
 1/2 cup buttermilk
 Mix it all well, then pour into a greased and floured sheet cake pan.  
 Bake at 350 degrees for about 20 to 25 minutes.  Ice this cake while it 
 is hot with:
 1 stick margarine
 6 tbsp. milk
 3 tbsp cocoa
 Melt these three ingredients together in a medium saucepan, then stir in 
 1 entire box of confectioners sugar.  Beat well, and ice the cake while 
 it is hot.
 It takes little time to make this cake, and everyone loves it.  Feel free 
 to add nuts, either in the batter or in the frosting.