“New Splat”:

This menu item (or Command N) brings up a dialog in which inner and outer radius values and division values can be set in edit-text fields.  There are also the Preferences check boxes in this dialog.  When the okay box is clicked the splat is drawn to those settings.  But the splat controls are not  reset to those settings.  So, you can draw a splat at a different setting than those of the scrolls without having to reset them and set them back.

The default values in the dialog are the same as the default values for the controls.