15 FOR...NEXT 77 A note on LISTO 80 16 IF...THEN...ELSE. More on TRUE and FALSE 84 Multiple statement lines 84 For the slightly more advanced 85 More on TRUE and FALSE 85 Local variables in procedures 90 17 Procedures 87 18 Functions 94 19 GOSUB 96 GOTO 99 20 ON GOTO, ON GOSUB 100 Giving the computer instructions – Part 2 Arrays 102 21 Even more on variables 102 22 READ, DATA, RESTORE 107 23 Integer handling 110 24 String handling 114 25 Programming the red user-defined keys 119 The BREAK key 120 Other keys 120 26 Operator priority 122 27 Error handling 125