Informal review A review not based on a formal (documented) procedure. Innovation: The process of renewing something that exists. Innovation changes the values onto which the system is based. Input: A variable (whether stored within a component or outside) that is read by a component. Input value An instance of an input. See also input. Inspection:A type of peer review that relies on visual examination of documents to detect defects, e.g. violations of development standards and non-conformance to higher level documentation. The most formal review technique and therefore always based on a documented procedure IEEE 610, IEEE 1028]. See also peer review.