= Instances Overview
Author's Name <person@email.address>
v1.2, 2015-08

This is the optional preamble (an untitled section body). Useful for writing simple sectionless documents consisting only of a preamble.

NOTE: The abstract, preface, appendix, bibliography, glossary and index section titles are significant ('specialsections').

:numbered!:
[abstract]
[suppress='Contraction WeakExpression']
== Instances
In this article, we'll call a computer server that works as a member of a cluster an _instance_. for example, as shown in this http://redpen.ignored.url/[mishpelled link], each instance in distributed search engines stores the the fractions of data.

Such distriubuted systems need a component to merge the preliminary results from member instnaces.