9.9.2 Conditional switch and case
command list for default behavior
breaksw is optional and can be used to break out of the switch after a match to the string value of the parameter is made. Switch doesn't accept "|" in the pattern list, but it will allow you to string several case statements together to provide a similar result. The following C shell script has the same behavior as the Bourne shell case example above.
echo -n "B "