All signs have four tiers of upgrades that are un-lockable. The next tier can be unlocked after sufficient ability points have been applied to upgrades in the preceding tier. Upgrades may have 2-5 possible levels with varying affects. All sign upgrades add +0.5/sec stamina regeneration in combat. For all of the SIgns, if you unlock and equip their Alternate mode it is activated by holding down the Sign key instead of just tapping it. __TOC__