Uh... there's two ways to make a link. One, you can drag and drop stuff - like recipes, salvage, and I think power buttons - into the chat input area (where you'd normally type)...and it'll generate a link.
Which is fine when you're dealing with stuff that you have on your current character - but what if you wanna look up things you DON'T have access to?
Well, you can simply type stuff in square brackets and have it show up. The trick is though...you got to get the name and syntax exactly right. That's why you're better off dragging to make your links if you can. But yeah, you can just type it. Just make sure you don't flub the name.
A power example:- [Invincibility] will work. [Invincible] will not. [Bone Smasher], not [Bonesmasher]. Most of the time when links don't work..well, you probably just typed it wrong. =P
Note where there are different versions of a power that share the same name (say for different ATs/powersets), you can specify which version you mean by adding a period and the AT name...or which powerset it's from, and so on. I forget the fuller syntax though.
@Acyl
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Also, there are plenty of powers with similar names, but the links are different. For example, a /Fire tank has [Tanker_Melee.Fiery Melee.Fire Sword Circle], but just [Fire Sword Circle]pulls up the Fire Manipulation version (blaster version?).
But as _Acyl_ said, you just have to get it right.
Try [Vomit] or [Toy Bat] in game for some fun 
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Yeah, thank you - I couldn't for the life of me remember the full syntax for AT/Powerset/Power when I replied just now.
Annnd yeah, that is the fun part - the datalinks work on all things that are in the game, including NPC powers and gag developer stuff.
Sadly, 'The I Win Button' apparently doesn't actually exist on the live servers. Only on test.
(It's a developer tool that kills everything on the map, or so we're told. Used to test reward drop rates.)
@Acyl
VIRTUE
Blue: Realpolitik, Leading Lady, Glass Lass, Superball, Alec Kazam
Red: Battery Acid, Obsolete, Bugfix
[ QUOTE ]
Try [Vomit] or [Toy Bat] in game for some fun
[/ QUOTE ]
My personal favorite is [Dry Heave].
Yes, it's a real power (but not for players).
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[ QUOTE ]
Also, there are plenty of powers with similar names, but the links are different. For example, a /Fire tank has [Tanker_Melee.Fiery Melee.Fire Sword Circle], but just [Fire Sword Circle]pulls up the Fire Manipulation version (blaster version?).
[/ QUOTE ]
For a very good example... check out [Brawl] vs. [Inherent.Brawl]
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Hello. Recently came back to the game for a month after an 18-month hiatus. If my money holds up, I'll stay even longer.
Anyway, after doing a couple of ITFs and a Statesman TF, I've noticed some people typing up links in chat that, when clicked, show the info for a particular recipe, piece of salvage and power. I really don't remember CoH having this when I last played, and trying to put the names of whatever inside square brackets seems to... only make them look like they've been put inside square brackets, rather than bolded bracketed links. So, how do I impress my friends with this cool trick?