Eventually, when you wire your black boxes together, you will wire that reference to another box.
最后，在您将黑盒连接在一起时，也会将引用连接到另外的黑盒上。
2
In the diagram, a thick blue arrow stands for page transition, a black arrow stands for card invocation, and an orange dotted arrow stands for field reference.
在图中，蓝色的宽箭头表示页面转换，黑色箭头表示卡片调用，而桔红色虚线箭头则表示字段引用。
3
Police have discovered that several signs have had the word 'Voldemort' added in permanent black marker so that they now read 'Stop Voldemort' in reference to the fantasy film's main villain.