Making "Real Stack" invisible

[Joe Lewis Wilkins]

Yeah, I'm a nuisance! (smile) Now that I have a Splash Screen stack as  
a standalone, I'd like to make the "real stack" that it will open  
invisible so the user is not even aware that there is one. I know  
there used to be a way to may files invisible from the Finder, but I  
no longer find this option anywhere. Help anyone?

TIA,

Joe Wilkins
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