This script parses the MD files located inside 'md/' directory, taking account the language specified in the URL.
Each file have the format name.[language.]md. If language is omitted, the default is spanish. The first lines of each MD file have a variable: value syntax, used for metadata. After a blank line, the document body begins.
Translations and fixes are most welcome!
Big kudos to Michel Fortin for the PHP Markdown library 👍👍 https://michelf.ca/projects/php-markdown/extra/