# Document-Centric Computing Document-centric computing treats the document as a primary operational surface rather than a passive payload. Content, metadata, relationships, state, instructions, templates, and generated regions can travel together in inspectable form. XDO is the clearest project expression: Markdown remains readable while selected structures become data and bounded workflow. AutoSites applies the same principle by deriving routes, media, feeds, and search surfaces from authored documents. Related: [[wiki/Executable Markdown|Executable Markdown]], [[wiki/Human-Readable Intermediate Representation|Human-Readable Intermediate Representation]], [[wiki/Document Graph|Document Graph]].