Clarify the relationship between CDI Lite and CDI Full specifications

spec/src/main/asciidoc/core/definition_full.asciidoc

@@ -2,6 +2,9 @@
 --
 {cdi_full} contains all the functionality defined in {cdi_lite} and adds some additional features such as specialization, decorators, session scope or conversation scope.
 Some of these concepts were briefly mentioned in the previous {cdi_lite} chapter and this section of specification defines them in depth.
+
+All rules from the {cdi_lite} specification apply to {cdi_full}, unless the {cdi_full} specification says otherwise.
+Most sections of the {cdi_full} specification add new rules on top of the {cdi_lite} specification, but some override the corresponding section of the {cdi_lite} specification and provide a replacing set of rules.
 --
 
 [[scopes_full]]