Help needed with a DRG macro

[Rongway]

What do GCD and oGCD mean?
I guess GCD is "Global CoolDown", which is the global wait there is after you execute any action. You can slightly reduce it with spell/skill haste but you can't remove it and during this time you cannot execute other actions...
...except actions which are off the global cooldown. I guess this is what oGCD means? "Off the Global CoolDown"?
Like for DRG some self buffs and jumps are oGCDs, which is exactely why I tipically use them one by one in between the actions of my combos.
Not sure that's the "correct way to play" tbf, DRG is my only melee in FFXIV, I guess it came "natural" to me from my experience in other MMORPGs before FFXIV °-°

A GCD action is classified on its tooltip as a Spell or Weaponskill. When you use it, it triggers a roughly 2.5s lockout where you can't use another GCD action. When a combo is active, using a GCD that is not the next combo action will cancel the combo.

An oGCD action is any non-Spell non-WeaponSkill action--either an Ability or blank (like Sprint). These do not trigger the GCD and are not locked out by it. They also do not interrupt combos. If you don't macro your actions you can fit up to two of these in between GCDs. If you're macroing your actions, your next GCD will be delayed if you try to use two oGCDs, and may even be delayed if you try to macro just one.