Template
This is a template for starting out a new Model from scratch. It
has a very simple TemplateModel that shows use of turtles and
links, along with an index.html file providing a View and an
Animator to run the model.
Diffusion
Diffusion is the process by which particles move from an area of
higher concentration to an area of lower concentration. Here two
turtles travel through patches, dropping a random value on
patches and diffusing these values.