I guess I might have been a bit cryptic. What I'm talking about is tier up recipes - entropedia calls these 'tiers', and you can see a list of all known tier up recipes in entropedia by selecting manufacturing -> tiers. Now, when you go to the page of a tool or weapon, there is a "tab" at the bottom that allows you to link the tier recepies to the item, so the known teiers show up on the same page. See
Sollomate Opalo for an example of item with linked tier recepies.
Armor does not presently have this. How I would like it to be implemented, is that there would be tiers linked to the page of the armor set, not the pages of the individual armor parts.