How to switch between Rendered Edit and Source Code in Mardo

Use Rendered Edit to edit the Markdown document through its formatted presentation. Use Format → Source Code Mode or press Command-/ to show and edit the exact Markdown syntax. Both presentations edit the same source bytes and share one Undo history.

Edit rendered Markdown

Choose the rendered editing mode from the document's mode control. Proven Markdown punctuation may be concealed while you type, but ambiguous or incomplete syntax remains visible. Formatting controls and the Paragraph and Format menus change the canonical Markdown directly.

Show exact Markdown source

1. Make the document window active.

2. Choose Format → Source Code Mode, or press Command-/.

3. Use the same command to return to Rendered Edit.

Source Code shows the exact logical Markdown source. Switching modes does not export, re-import, normalize, or rewrite the file.

View without editing

View mode is rendered, selectable, searchable, and read-only. Read-only files and documents without editor admission remain available in View mode.

Current as of September 7, 2026.