In large saucepan, combine sugar, margarine, milk and cocoa. Bring to boil over medium heat, stirring frequently. Continue boiling 3 minutes, stirring frequently. Remove from heat. Stir in oats.* Drop by tablespoonfuls onto waxed paper. Let stand until firm. Store tightly covered.
*If using old fashioned oats, cool mixture in saucepan 5 minutes.