Numerous errors crept into Part I of Bob Fraser‘s “Programming Arcade Games” in our October issue (TSU 1:5). Line 40 of Figure 1 should read POKE I + D + 1, 23. The third paragraph on page 61 should refer to Figure 2A, not 3. Figure 3 should contain the line 1005 PRINT AT R,I,” “. In line 40 of Figure 2, C<>2; in line 50, C<>29; in line 60, add blanks before and after the asterisk (also in Figure 2A). In line 55 of Figure 2A, R<>1; in line 56, R<>18; in lines 58 and 59, add three blanks between the quotation marks. Line 1006 of Figure 3 should end with a semicolon; line 2010 should contain four blanks between the quotation marks; and line 2020 should read GOTO 20.
As a result of these errors we have instituted another stage of proofreading to ensure that similar errors do not recur. We apologize to our readers.