MD041 - First line in file should be a top level header

Tags: headers

Aliases: first-line-h1

Parameters: level (number; default 1)

This rule is triggered when the first line in the file isn't a top level (h1) header:

```
This is a file without a header
```

To fix this, add a header to the top of your file:

```
# File with header

This is a file with a top level header
```

Note: The level parameter can be used to change the top level (ex: to h2) in cases where an h1 is added externally.

MD002 - First header should be a top level header

Tags: headers

Aliases: first-header-h1

Parameters: level (number; default 1)

This rule is triggered when the first header in the document isn't a h1 header:

## This isn't a H1 header

### Another header

The first header in the document should be a h1 header:

# Start with a H1 header

## Then use a H2 for subsections

MD026 - Trailing punctuation in header

Tags: headers

Aliases: no-trailing-punctuation

Parameters: punctuation (string; default ".,;:!?")

This rule is triggered on any header that has a punctuation character as the last character in the line:

# This is a header.

To fix this, remove any trailing punctuation:

# This is a header

Note: The punctuation parameter can be used to specify what characters class as punctuation at the end of the header. For example, you can set it to '.,;:!' to allow headers with question marks in them, such as might be used in an FAQ.