QoS Traffic Shaping Explained

Thanks Laz, is it different for Policing then? As in this article, Rene says 1 token is a byte:

When a packet arrives the policer will check if it has enough tokens in the token bucket, if so the packet will be forwarded and the policer will take the tokens out of the token bucket. So what is a ‘token’ anyway? When it comes to policing each token represents a single byte.