Explore the intricacies of YAML parsing in APL through this 18-minute conference talk from Dyalog '23. Delve into Brandon Wilson's implementation of a YAML parser, which draws inspiration from the Co-dfns architecture. Gain insights into the parser's structure, key design choices, and how a linear data-flow model enables writing APL code that spans multiple levels of detail simultaneously. Learn about YAML's characteristics as a human-readable data-serialization language, its support for arbitrary keys, and the challenges involved in implementing a YAML parser. Discover how APL can be leveraged to tackle YAML parsing problems and consider the potential contributions APL could make to the YAML community.