bannor:~/work/perl/monks$ csh
bannor:~/work/perl/monks> cat test.csh
setenv MYTEST "This is a test."
bannor:~/work/perl/monks> echo $MYTEST
MYTEST: Undefined variable.
bannor:~/work/perl/monks> source test.csh
bannor:~/work/perl/monks> echo $MYTEST
This is a test.