transclusion
n.— «These components are then included by reference within documents, which is a practice often called “transclusion.” Transclusion does away with reuse via copy-and-paste, an insidious practice that results in a spiraling loss of control, maintenance issues and the uncomfortable need to accept the lesser of two evils: (1) the reality of compounding maintenance burdens; or, (2) learning to accept inconsistent and out-of-date information.» —“SOA principles drive content practices” by Jake Sorofman SearchSOA.com July 9, 2008. (source: Double-Tongued Dictionary)