1)   Grammar Slammer with Checkers 4.2 English grammar + spelling checkers with help + reference that answers the questions the checkers raise. Complete reference integrated with checkers. Handy + Easy. Use as tutor, too. Windows 95 or higher. 2)   Grammar Slammer 4.2 English grammar help + reference that answers the questions the grammar checker cannot. Get Answers not Questions and real grammar help for Windows. Handy + Easy. Use as tutor, too. 3)   Grammar Slammer - Non-Windows 4.0 English grammar help + reference that answers the questions the grammar checker cannot. Get Answers not Questions and real grammar help. Handy + Easy e-book format. Use as tutor, too.