In order to run the Geometric Clutch model for bull sperm, you must first load the parameter settings. We included a set of parameters in the download. The file name is bullsp.dat.

Once you have downloaded the "zipped" files and extracted ("unzipped") them, you are ready to run the program.

1) Open the bullsperm.exe file first.
2) Click on the "Data" menu tab.
3) Select "Load parameters".
4) Select the bullsp.dat file from the location you saved it to orginally.
5) Click on the yellow R on the toolbar to run the model.