Ch19\dog_chicken.m
....\dog_trace.m
....\dog_trace3.m
....\double_one.m
....\ellipse_and_line.m
....\example19_4.m
....\example19_5.m
....\man_and_dog.m
....\man_and_dog2.m
....\man_and_dog3.m
....\man_and_dog31.m
....\methods1.m
....\state_generate.m
....\two_strings.m
Ch19