SilverBullet supports footnotes in two flavors: classic reference-style footnotes and inline footnotes. Both are rendered as a small widget in Live Preview and show their content on hover.
A reference uses [^label] and is paired with a definition [^label]: body somewhere in the same page. Labels can be any string without whitespace or ].
Here is some text with a footnote.[^example] And a longer one.[^longer]
[^example]: This is the footnote body. [^longer]: A footnote body can span multiple lines, as long as continuation lines are indented by at least four spaces (or one tab).
Blank lines are allowed between continuation paragraphs, and **markdown**
inside the body is parsed and rendered.
The definition can appear anywhere in the page (top, bottom, or interleaved). It is conventional to put them at the bottom.
Inline footnotes use ^[content] and place the body right at the call site:
This claim has an inline footnote.^[Inline footnotes don't need a separate definition.]
The content is parsed as inline markdown.
… widget. Move the cursor into it to see and edit the raw [^label] source.[^ triggers completion suggesting all footnote labels already defined on the page.