The Object Manager has an option to session persistent in the global scope. This is useful, if you have +different locations, which cannot be resolved properly by the object manager (e.g. abstract parent classes)
+When you enable the option "globalScope" in the options on instantiating the objectmanager, the Objectmanager +will create an object _cdi in the global scope, which will be reused on other instantiations of the +Objectmanager.
+Have in mind, that you should not rely on global vars, since it is a sign, +that you could optimize your code. But cdi gives you this possibility, if you have no other way to go.
+