The autocomplete feature lets you easily search and reference your Zotero items while you're writing in Roam:
Contextualizing citations
You can also navigate from[[@citekey]] page references via a right-click, to access related actions and content:
The menu will be displayed only for [[page references]] - not tags, or aliases.
๐งช
Here, '@' is used as trigger to search for items. You can customize how the items appear in the list, as well as the format in which they're inserted into the block, in your user settings.