MARKDOC

From personal blogs to massive documentation sites, Markdoc is a content authoring system that grows with you... Markdoc provides an extensible system for defining custom tags that can be used seamlessly in Markdown content. Using the custom tag syntax, we're able to express more elaborate document hierarchy, insert interactive components, and support features like conditional content, content inclusion, and variable interpolation. Markdoc's extensions to the Markdown syntax are designed to be composable and minimally intrusive, providing crucial functionality without compromising the readability of prose.