Also called Transcluding.
Benefits of this are being able to display a number of atomised notes within a single parent note - and any changes made to the child note will be reflected wherever it is embedded, so no duplicate information or out-of-date copies etc.
Other applications that support this have done so by modifying the wiki-link syntax similar to an image embed. ![[embedded note]]
Edit from below:
If block-referencing and heading references are supported this would be even more powerful.
![[embedded note#heading]] or ![[embedded note^block-reference]]