Preferences The Preferences window is actually a series of seven windows, each called to the front by clicking on the different tabs; Output Control, Basic Information, View Preferences, Solver Packages, Evapotranspiration, Recharge, and Units. The Recharge and Evapotranspiration windows include text boxes for entering default values for these stresses and option buttons for choosing how each of these stresses is handled in MODFLOW and MODPATH. The other windows are discussed below: