1sub foo { 2 print "in sub foo\n"; 3} 4 5sub bar { 6 print "in sub bar\n"; 7 $^P -= 0x40; 8} 9 10foo(); 11$^P -= 0x40; 12foo(); 13$^P += 0x40; 14bar(); 15$^P += 0x40; 16