As with most things, you can improve the writing by removing unnecessary words: > You might send variables to this server function by calling this endpoint fro

As with most things, you can improve the writing by removing unnecessary words: > You might send variables to this server function by calling this endpoint from your javascript code. …becomes: > send variables to this server function by calling this endpoint …and: > You can choose to use `register_rest_route()` to register a custom route [..]. …becomes: > Use `register_rest_route()` to register a custom route [..].