$\ = "\n";

print "interest";    # interest
print "\interest";   # interest
print "\\interest";  # \interest
print 'interest';    # interest
print '\interest';   # \interest
print '\\interest';  # \interest

print "test";        # test
print "\test";       # A tab followed by est
print "\\test";      # \test
print 'test';        # test
print '\test';       # \test
print '\\test';      # \test