Hello. In https://review.openstack.org/#/c/137066/ Matt used OmniGraffle to create a graphic. The graphic looks very good. At the moment I am confused about the usage of proprietary closed source software and want to clearify this point. At least myself cannot use OmniGraffle because I do not own a MacOS system and I do not own OmniGraffle. Christian. -- Christian Berendt Cloud Solution Architect Mail: berendt at b1-systems.de B1 Systems GmbH Osterfeldstraße 7 / 85088 Vohburg / http://www.b1-systems.de GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537