Editing WoW:Lua variable scoping (section)

=== Out of scope and garbage collection ===
A variable is said to have gone "out of scope" when it is no longer accessible by the currently executing code block. If a variable is out of scope, it is eligible for garbage collection. If no accessible references exist to the variable anymore, the variable will be garbage collected at some point in the future. Take note that this implies that global variables will never be garbage collected unless they are overwritten because they never go out of scope.