Whitespace is just a minor inconvenience, but variable names that offer no information as to what values are put in them is the real meaning of obfuscation.
The code block in question was this.
Code:
local xt,yt,zt = GetSpellCooldown(spellID)
local cdt = (xt + yt) - GetTime()
Even though it's a couple lines, the point is still there.
If speed is your concern, it would be quicker to type and more meaningful to use
local s,d,e.
References on the word obfuscation:
http://dictionary.reference.com/browse/obfuscation
http://wiki.answers.com/Q/What_is_ob...fuscation_used
http://sawaal.ibibo.com/computers-an...on-140331.html