Yes, you can. After you place your section view, right click on view, and pick properties, then you will have a menu to change the section line spacing, angle and to exclude it. You will have to click next to go through all the parts that have been sectioned.
If you select "Excl Comp" in the MOD XHATCH menu, the part appears un-cut by the cross section. This only works for a total cross section, not for an area cross section, and the menu selections described are for 2001, not Wildfire.