to strings.txt. e.g. for the power ffx_gravity_up I added the entries:
FFX_GRAVITY_UP_01, gravity reversal
FFX_GRAVITY_UP_DESC_01, temporarily reverse gravity, causing the target to fly into the air and back down again
Recompile the string table using FFEDit. This is all optional, by the way.
Attack Type - choose between Melee, Ranged (Beams and Projectiles), Area, Direct and Special
Attack Sub Type - only applies if you set Attack Type to Ranged, this differentiates the different types.
Magnitude - how much damage the power does or how hard it is to resist for state attacks. Most powers use this, the exception being special powers like teleport.
Damage Type - this covers the basic damage types and some special states. If you're after a special attack type, say Density Maximisation, and can't see it in here, try the Special Type box further down. If the Special Type box doesn't have _None selected then it overrides the contents of the Damage Type box, so make sure its set to _None for most Powers.
EP Cost How much EP it takes to use the power.
Speed How fast projectiles and beams travel, and how hard melee attacks are to dodge.
Stun How likely the attack is to stun the target.
Knockback How much knockback the attack does.
Range For melee powers, set these values to 1 and 5. For ranged and direct set to Min=0 and Max=0,1 or 2 for short, medium and long range. A Max=3 power will have effectively infinite range. Movement powers like teleport and sprint use the same values as Ranged powers, so a Teleport with Range=0,0 will be next to useless and a teleport with 0,3 means you have infinite range teleport.
Accuracy Chance of hitting for melee and ranged.
Radius Size of the explosion for Area and Ranged:Explosive Projectile powers. For melee attacks with the Melee:Area Attack flag checked, Small, Medium and Large correspond to 90, 180 and 360 degree arcs.
Special Type See desription of Damage Type above. Should usually be set to _None
Attached FX The FX used by the power. SHould be of the right type. If in doubt, check the FX used by known character's powers, but remeber to Save first.
Animation The animation to use with this power. Must be compatible with the power type, eg a melee animation for a melee attack etc.
Max Instances Used for flight Spawn and Impact Spawn projectiles.