@property<EOL><INDENT>def level(self) -> int:<DEDENT>
m = HEADER_MATCH(self._shadow)<EOL>if m:<EOL><INDENT>return len(m.group(<NUM_LIT:1>))<EOL><DEDENT>return <NUM_LIT:0><EOL>
Return level of this section.

        Level is in range(1,7) or 0 for the lead section.