Diffusion mode of “radical”，“emit”, "aura"

[Julien Dien]

In Magic chapter，it is said "Most spells that affect an area function as a burst, an emanation, or a spread." But I see some other words used in spell(or sp,su) descrpition.

e.x (1) Darkness spell
"This spell causes an object to radiate darkness out to a 20-foot radius."

e.x (2) Foretell,Su of Foresight School Wizard
"Foretell (Su): At 8th level, you can utter a prediction of the immediate future. While your foretelling is in effect, you emit a 30-foot aura of fortune that aids your allies or hinders your enemies, as chosen by you at the time of prediction."

I know that Brust can be blocked by barriars, Emanation is an "continuous Brust",and spread can turn corners(but it cost distance), but what kind of diffusion mode the "radiate" is? and "emit"? and "aura"? how they go through corners, barriars?

[avr]

Darkness works like light - a few editions ago they were the same spell. It won't turn corners. It certainly won't break through barriers. It should work though glass IMO.

Emit is the same thing as emanate in this context I think. Foretelling is an emanation.

[Julien Dien]

So I can count "radiate" as Brust, and "emit" as Emanation, right?
and Auras are also Emanation?

[Julien Dien]

A wizard within Emergency Force Sphere(a force semispheric wall around him, CHELIAX,Empire of Devils pg.23) can use Foretell Aura to affects others outside?

[avr]

Foretell isn't light. It should be blocked by a wall of force.

There's at least one person on these forums who does believe that glass (and walls of force) will block magic light. It's a defensible position on the rules.

[Julien Dien]

Cause Area effect need Line of Effect from the Origin and glass blocks it.

Now at least two.

[Julien Dien]

Can I count any Aura as Brust or Emanation(can not turn corners)?
Is there any Aura Speard or even unconditional?(such as " Any hostile creature within a 20-foot radius",Aura of Menace, Su)

[Julien Dien]

One of my friend insist,
the three diffusion modes in Area of spell description are just for spells, no evidence in rules shows it apply to Su.
"radiate", "emit" are just ordinary discription, not rule terms. The designer specially use these word to indicate they are not one of the three diffusion modes.
He quoted Aura of Courage, Su of Paladin,

Spoiler:

Aura of Courage (Su): At 3rd level, a paladin is immune to fear (magical or otherwise). Each ally within 10 feet of her gains a +4 morale bonus on saving throws against fear effects. This ability functions only while the paladin is conscious, not if she is unconscious or dead.

He insist the condition of Aura of Courage is just "within 10 feet of her" and "conscious", which means the Aura can affect the ally on the opposite side of wall.

I can not find any evidence in rules to argue with him, what you think?

[MrCharisma]

Are you the GM? If you are then just make a decision and tell them that's how you're ruling it from now on. If you're not then ask the GM to make a decision.

It's unlikely to break the game either way, but it's important that everyone's on the same page.

[Diego Rossi]

If he insists, have it work for monsters too.
He probably will change his opinion.