The Batch File Additions dialog box is used to add extra lines to the batch file used to run the model. The lines can be added to the batch files for MODFLOW or PHAST but not MODPATH. The dialog box contains two places to enter the lines that will be inserted into the batch file. One area is for lines that will be executed before the model is run and another for lines executed after the model is run.
To display the Batch File Additions dialog box, select Customize|Batch File Additions...