main charmap
$0
newcharmap map1
$0
newcharmap map2, main
$0
setcharmap map1
$0
newcharmap map3
$1
newcharmap map4, map3
$1
$2
setcharmap map3
$1
$0
setcharmap main
$0
modify main charmap
$0
$3
setcharmap map1
pushc
setcharmap map2
pushc map3
$1
$0
$0
popc
$0
popc
$0
newcharmap map1
setcharmap map5
popc