From Bulbapedia, the community-driven Pokémon encyclopedia.
1=Facility; Unknown is the default
2=Gold or Silver print; Silver is the default; has to be capitalized
3=Trainer sprite; L is the default; use D for Dawn, E for Ethan, and Ly for Lyra
4=image size
For example:
{{print|Arcade|Gold|D|200}}
would show: