[whpalmer4]

It's an OmniOutliner outline, but that's irrelevant — as long as the Mac can tell what application to use to open the file (in other words, if you double-click the file, does it open properly) the right thing will happen. If you want to keep your review checklist as a Kid Pix drawing, that should work fine :-)

And you can store it anywhere you want, because when you set up the alarm, you use the usual Mac file opening dialog box to show iCal where it is.