Q:
How do you give custom names to chat codes?
What do you mean by custom names?
There are items with unique names, maybe these are the ones you are talking about?
Krall Bloodsword – Mesmer
Krall Peterson – Warrior
Piken Square
Krall Peterson – Warrior
Piken Square
No, I mean how when someone posts [fincapisawesome] in chat and when you mouse over it, it shows you Twilight. How do you add names to the codes you put in chat?
The standard chat codes should not support that they basically only contain an id within the gw2.dat file both the text and item shown should be pulled from there (see http://wiki.guildwars2.com/wiki/Chat_link).