Modelling using UML

As was discussed this week, there are nice open source UML tools that can
allow us to lay out flows.  Matt Saxon (thanks Matt!) identified PlantUML
[1] as a good tool for this.  I just wanted to say that I endorse this
choice.  It is a fine tool, and allows significant tuning if we need.  The
input format is plain text, and there is a simple web service that can be
used to dynamically generate output from that source if we want to work
that way.  There are plugins available for many environments (including
browser plugins [2]). It can also generate SVG and PNG among other formats,
should we desire.

[1] http://www.plantuml.com
[2]
https://chrome.google.com/webstore/detail/plantuml-viewer/legbfeljfbjgfifnkmpoajgpgejojooj


-- 
-Shane