Clarifies aim of document (#48)

* Clarifies aim of document

* Reduce over-width diagrams (#49)

* Reduce over-width diagrams

TRC diagram simplified and reduced to 72 characters width.
Figure 3 was identical and superfluous so has been replaced with a reference to the revised Figure 2.

* Reformatted pseudo-code

* Fix formatting error in pseudo-code

* More formatting fixes

* Updated TRC diagram

* Updated security goal in Intro

* shorten sentence

* changelog

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Co-authored-by: Nicola Rustignoli <nic@scion.org>

* wording

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Co-authored-by: Nicola Rustignoli <nic@scion.org>

Author: knmeynell

draft-dekater-scion-pki.md

@@ -168,7 +168,7 @@ SCION relies on three main components:
 
 This document describes the SCION PKI component used by the Control Plane. It should be read in conjunction with the other components {{I-D.dekater-scion-controlplane}} and {{I-D.dekater-scion-dataplane}}.
 
-The SCION architecture was initially developed outside of the IETF by ETH Zurich with significant contributions from Anapaya Systems. It is deployed in the Swiss finance sector to provide resilient connectivity between financial institutions. The aim of this document is to document the existing protocol specification as deployed, and to introduce new concepts that can potentially be further improved to address particular problems with the current Internet architecture.
+The SCION architecture was initially developed outside of the IETF by ETH Zurich with significant contributions from Anapaya Systems. It is deployed in the Swiss finance sector to provide resilient connectivity between financial institutions. The aim of this document is to document the existing protocol specification as deployed, to encourage additional implementations, and to introduce new concepts that can potentially be further improved to address particular problems with the current Internet architecture. This document is not an Internet Standards Track specification; it does not have IETF consensus and it is published for informational purposes.
 
 Note (to be removed before publication): this document, together with the other components {{I-D.dekater-scion-controlplane}} and {{I-D.dekater-scion-dataplane}}, deprecates {{I-D.dekater-panrg-scion-overview}}.