• Tables get captions, sortable columns, sticky headers, and a copy-as-TSV button
• Code blocks get syntax highlighting for 27+ languages, line numbers, diff highlighting, and filename headers
• Highlight text with ==marks==, write super^script^ and subscript, and use :emoji: shortcodes
• 15 types of callouts and admonitions, with foldable support
• Auto-generated table of contents with [TOC]
• Click any preview element to jump to its source, toggle task checkboxes inline, and view images in a lightbox
• Heading anchor links and footnote popovers
• Sample Document available under the Help menu
• Now licensed under FSL-1.1-MIT (converts to MIT after two years)