7 AUTO, DELETE, REM, RENUMBER 43 8 Introducing graphics 45 Modes, colours, graphics and windows 45 Graphics 46 Windows 47 Making a graphics window 47 Making a text window 48 Changing the colours of text and graphics 50 9 More on variables 52 Numbers and characters 52 String variables 53 How numbers and letters are stored in the computer’s memory 54 Real and integer variables 55 Summary 56 10 PRINT formatting and cursor control 57 Field widths in different screen modes 57 Altering the width of the field and the way in which numbers are printed 60 For the more technically minded 60 TAB(X) 62 TAB(X,Y) 62 Advanced print positioning 63 Cursor control 65 Cursor on/off 66 11 Input 67 12 GET, INKEY 70 Advanced features 71 13 TIME, RND 73 Structure in BASIC 14 REPEAT...UNTIL, TRUE, FALSE 74