Book Instructions General Instructions: Key each exercise only once, following the spacing directions in the book. When the exercise has been completed once, the student should press the ESC key. The following instructions are for Century 21 Jr CD For the following exercises: 17e,18c,19b,19d,20c,21d,22b,22d,23b,23d,24c,25c,25d,27b,28b,28c,28d,29c,31d,36d,37c,39c,41c,41d,42c,44c,45c,48d The instructions should read: Key each line twice single-spaced; double-space between 2-line groups