It is possible to add any metadata keys to a Markdown topic by inserting it at the beginning of the file using the YAML metadata format.
The YAML metadata format is a YAML-formatted block at the beginning of a Markdown file. It is also known as a "front matter".
The YAML block begins with three dashes on the first line, and ends with three dashes, as follows:
---
"audience": "internal"
"ft:title": "Design"
---
The Markdown connector supports multi-valued metadata, by using a YAML array in the YAML metadata block, as follows:
---
"SoftwareVersion": ["3.8", "3.9"]
---
Topics inherit the audience metadata from the document. If a topic or a section of a public document is set to internal, it remains visible to everyone.