>>50415633The reference book is an official product approval guide and is more recent than an old lore book from 1996. Most companies have something similar, it's basically a Pokémon for dummies guide so what is written there is official info on how others should present the series, not anything that applies to the people working on the series.
As for people using the anime, those are animation errors according to the head writer of the original anime so not examples worth using.
As for your question, this is answered by an x/y product approval guide.
