Ah! I see. This
ref: a globally unique identifier, often represented as a pointer to the place (page, position) in your space where the object is defined. For instance, a page object will use the page name as itsrefattribute, and ataskwill usepage@pos(whereposis the location the task appears inpage).
refers to the ‘ref’ as globally unique, which I think is what confused me. Thanks for the reply.