# Bareword
print <<END;
Foo
END

# Literal
print <<'END';
Foo
END

# Interpolate
print <<"END";
Foo
END

# Command
print <<`END`;
Foo
END

# No lines
print <<END;
END

# Multiple
print <<FIRST, <<SECOND;
Foo
FIRST
Bar
SECOND

# End of document (missing newline)
print <<END;
Foo
END