load=1p47
define set1 *.O?' and dna 
define set2 *.OP? and dna
define set3 *.N? and dna

select all
cpk off
wireframe off
cartoons
pause

restrict dna
cartoons off
wireframe
pause

select set1
cpk 170
pause

cpk off
select set2
cpk 170
pause

cpk off
select set3
cpk 170
pause