Tree Outliner

Drag a Tree Outliner document (.treeoutline) onto Marked to preview it as headings and lists, or as a Mermaid diagram.

Headings and lists

This is the default. Marked compiles the outline as Markdown:

  • The document title is a level 1 heading.
  • Outline rows continue as headings through the level set by Headings through level in Marked Settings, Apps pane, under Tree Outliner. The default is 2, so the first row of the outline is a level 2 heading and deeper rows become a nested list.
  • Notes on a row become paragraphs under that heading or list item.

Mermaid diagram

In Marked Settings, Apps pane, under Mind Maps and Outlines, turn on Tree Outliner outlines to preview the file as a Mermaid diagram. The document title is the root node. The same switch applies when you open a .treeoutline file and when you include one in another document.

Headings through level is used only when that switch is off.

Mermaid diagrams need MultiMarkdown, CommonMark (GFM), or Kramdown. They do not render with the Discount processor.

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