The YAML headers are necessary to process the Markdown (or HTML) files in the page collections. The Progenetix Jekyll template uses standard Jekyll headers, but also adds some additional parameters.
@mbaudis 2019-03-14: more ...
The Progenetix Jekyll template modifies the standard Jekyll file structure.
New pages are added to the website inside one of the “collections” directories in the /pages directory. This can either be done by adding files locally or on Github (if hosted there).
/pages
@mbaudis 2019-03-25: more ...