YAML::PP is a modular YAML processor.

It aims to support YAML 1.2 and YAML 1.1. See https://yaml.org/. Some (rare) syntax elements are not yet supported and documented below.

YAML is a serialization language. The YAML input is called "YAML Stream". A stream consists of one or more "Documents", separated by a line with a document start marker ---. A document optionally ends with the document end marker ....