
Figure 4. Model parameter database hierarchical
outline. i) Access to all model parameters in a single table. ii) Double clicking on a
closed folder expands the selection hierarchically to show the sub parameter properties of
the selected category. Open folder indicates that the database category is expanded and
sub parameter properties should be visible. (iv) Double clicking on the document icon
lines shows requested portion of the model parameter database. v) Displays the help file.
vi) Alternative to double clicking to show selected parameter section. vii) Close
hierarchical view of parameter database. Note that this dialog has a grey background to
make it easy to distinguish from the model module launcher.

Figure 4b. Model parameter database dialog. i).
Top lines of each parameter section contain the software switches which control model
behaviour and allow selection between optional model components. ii) User input box which
is automatically validated for datatype. iii) Parameter sheet cursor operated with cursor
keys allows entry and modification of text and parameter values. iv) An optional field
that contains the parameter description and where aplicable the range of acceptable values
which may be entered into the parameter field. v) Compulsary field containing the model
parameter value. vi) Optional field containing the literature citation or other related
information. vii) Compulsary field containing a unique search description for parameters,
used internally by wimovac to find the model parameter in the database.