MDKV: A Multitrack Markdown Container for Structured, Portable Documents

MDKV (Markdown Key-Value) is a lightweight, YAML-free key-value format for Markdown documents. Every key-value pair maps to a Markdown heading and its body text, enabling round-trip transformations between human-readable Markdown documents and structured data (JSON, TOML). The specification is open source under Apache-2.0 and situates MDKV with respect to Matroska (MKV) for extensible container...