NOTICE: The most current update contains script-breaking changes! The function now works exactly like _ArrayConcatenate. It does not return a value, but sets the parent array as the concatenated array. I know there's examples of this, but I thought I share this one with you. It's fully commented to aid those learning the language. Supports vertical and horizontal merging. There's minimal explicit variables by design. Not very elegant, but it works. One advantage this method has is zero depen