Here’s my display,
showing how data flows between parts of the
model. It consists of circular or diamond-shaped nodes
connected by arrows. Each circle represents a chunk of data:
usually, a complete collection of households, benefit units,
or whatever. Each diamond represents a transformation.
Clicking on a circle opens a new “viewlet” web page
that explains its data and, below that, shows a data
viewer. Clicking on a diamond opens a viewlet that
shows and explains the code that carried out the
transformation. Using the buttons on the left of the
display moves up or down; using those on the right
zooms in or out.