Description:
When I have LibreOffice save a copy of a document as markdown, it chooses what paragraphs/styles to turn into headers based on whether or not they're children of the default Header 1, 2, 3… styles.

It would be useful to have an option that would allow markdown headers to be determined on a paragraph's hierarchy in the Navigator's headings tree, instead.

Steps to Reproduce:
1. Have a Libre Writer Office Document
2. Give a style outside of the Heading and Heading 1, 2, 3… trees an Outline level using Paragraph style options.
3. Save a copy of the document as a Markdown file.

Actual Results:
These styles have no Markdown heading level, and thus, no outline level in Markdown-focused software.

Expected Results:
An option, while saving a copy of a file as Markdown to choose whether to base Markdown Headings on default headings style, or, a paragraph's location in the Navigation menu's heading tree hierarchy.


Reproducible: Always


User Profile Reset: No

Additional Info:
N/A