iables</code></dt><dd><p>a nested list of variables that are changed within a
simulation design. The name of each sublist item has to be a valid global
of the defined NetLogo model. Each list item consist of a min value, a max
value, a step value and a qfun (e.g. list("paramA" = list(min=0, max=1,
step=0.1, qfun="qunif")))</p></dd>
    <dt><code>constants</code></dt><dd><p>a list of constants that are kept constant within a
simulation design. The name of each list item has to be a valid global of
the define