The content here is an Antora component for the ec CLI. The YAML files within the dist/cli-reference directory are generated by running make reference-docs which generates those based on the data structures of the Cobracobra library used for the command line argument parsing.

The template directory is used by the reference-antora-extension to transform those YAML files into Asciidoc and is in Handlebars syntax, the modules/ROOT/nav.adoc is also parsed and evaluated as a Handlebars template.