Phenixer

I found ItemStack.getTooltip(EntityPlayer par1EntityPlayer, boolean par2) that can help. And in the method I actually found that item.addInformation(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, List par3List, boolean par4) is used in getToolTip so we can add more tooltip lines to it. Since I actually want to add tooltip for every item in game and not just my extends of Item. I will actually need to modify the Core game and... for this I need to know how CoreModding works. Any help would be appreciated. Thanks, Phenixer.

Is there tools to modify Item Popup, preferably of all items in the game (one simple event?). I would like to add informations about Pickaxes power, Armor points, Food level etc... Thanks, Phenixer.