Magical Double Weapons

[Caliber]

If anyone would be so willing, can you provide me a brief run down on the rules for enchanting a double weapon? I vaguely remember rules in AV re: the matter; something about only one end getting the enchantment or something? I'd look it up myself but my copy isn't available at the moment and the Compendium doesn't have anything either.

Thanks!

 

[Mort_Q]

An enchanted double weapon receives an enhancement bonus on both ends, but weapon properties or powers conferred by the enchantment affect only the primary end of the weapon.

The rules are the same except this.