The Default button allows you to update the default settings to several of the Part/Machine tab's options on the Setup Options dialog box (Edit | Preferences | Setup). When a new measurement routine is created, it reflects any changes made to the accessible parameters, only if the Default button is pressed. If the OK button is selected (without the Default button being pressed) the defined parameters will only apply to the active measurement routine and will not affect PC-DMIS's registry entries. The default values are stored in the registry. These parameters can be updated in the appropriate dialog box or by using the PC-DMIS Settings Editor. See the "Modifying Registry Entries" chapter.
If any of the parameters are changed and the Default button is clicked, PC-DMIS will update the registry file, redefining the default to the current setting.