Use both "@" and "[[" to add a reference node.

When I add a reference node, Tana reminds me that I must use "@" to type it.
when inputting “@” ，you needs to press two different keys(2+shift) at the same time to work. It is very inconvenient compared to inputting [[ , and inputting "@" interrupts my process of entering text.

Actually，we are more concerned about the smoothness of operation when typing in Tana。

You can use both @ and [[ to add a reference node at the same time. And it is supported in Notion.