Rename or re-describe an object in the user's graph, or set any of its type-specific fields: a contact's phone, email, headline or location, a company's funding stage, and so on. 'name' and 'description' work on every type (files included); other field names come from the type's field dictionary, which get_graph_object returns as 'editable_fields'. Read that first rather than guessing a name, because a name the dictionary does not have is skipped. Pass null to clear a field. Identify the object by object_id (search_graph_objects returns it). To add to a note or any description without losing what is there, pass the new text in 'append' instead of rewriting 'description'.