/goop containers config view <container>
Easiest way to see slot numbers, required in most edition commands.
The view tells you the slot indices as well as all their properties.
Internal name of the Container Template you are editing.
Easily check slot numbers, and all sorts of indices with this command.
/goop containers config view BANK
Allows you to see the layout of a template of name 'BANK'
/goop containers config view STEEL_SMELTERY
Allows you to see the layout of a template of name 'STEEL_SMELTERY'
/goop containers config view IRON_CHEST
Allows you to see the layout of a template of name 'IRON_CHEST'