A Markdown table uses pipes (`|`) for column separators and a dash row for the header divider. Renders to HTML on GitHub, GitLab, every Markdown-aware static site generator, and dev tooling like MkDocs. Particularly useful when documentation lives next to code — paste data into a README.md and it renders as a real table.
How to open
Any text editor (Markdown is plain text). VS Code, Obsidian, Typora, and most Markdown editors live-preview tables. GitHub renders them automatically in commits, issues, PR descriptions.