# MD023 - Headers must start at the beginning of the line Tags: headers, spaces Aliases: header-start-left This rule is triggered when a header is indented by one or more spaces: Some text # Indented header To fix this, ensure that all headers start at the beginning of the line: Some text # Header Rationale: Headers that don't start at the beginning of the line will not be parsed as headers, and will instead appear as regular text.