foam-template/docs/features/wiki-links.md

Wiki Links

Wiki links are the internal links that connect the files in your knowledge base.

To create a wiki link use [[ and type the name of another file in your repo, for example graph-visualization

You can also create a placeholder. A placeholder is a wiki link that doesn't have a target file and a link to a placeholder is styled differently so you can easily tell them apart. They can still be helpful to highlight connections.

Open the graph with Foam: Show Graph command, and look at the placeholder node.

Remember, with CTRL/CMD+click on a wikilink you can navigate to the note, or create it (if the link is a placeholder).