Nodes of different colours represent the following:
Solid arrows point from a submodule to the (sub)module which it is
descended from. Dashed arrows point from a module or program unit to
modules which it uses.
Where possible, edges connecting nodes are
given different colours to make them easier to distinguish in
large graphs.
daily
monthly
annual
find data end time
find data at start of simulation
daily
monthly
annual
daily
monthly
annual
xwalk with exco file to get sequential number