What is the supported #import syntax in .graphql files? Any examples?

[CostachescuCristinel]

I am having a very hard time trying to figure out how to import things in graphql files using the #import syntax. The only examples I can find on the web are these:

• found on an issue report about graphql-codegen:
  #import Query.* from "./some.graphql"

• found in the graphql-tools schema loading documentation
  # import Post from "posts.graphql"

• also this, from the main graphql-loader page
  #import "./fragments.graphql"

But I can't find any other bit of documentation anywhere else. Not even in the deprecated graphql-import repository.

Can someone please help me find some documentation? Maybe some examples?