Hi Klaus, thanks for your valuable contribution.
My main goal now is that when you double-click on the document, the app is opened (and also the document's icon has to be displayed properly). I have to figure out if the type and creator are sufficient or if I have to force the user to put the extension in the filename when she/he saves the document.
Many Mac users do not know how to use the filename extensions because by default the Mac does not show them.
I seem to have realized that LiveCode does not respect the "show all filenames extensions" choice made in the Finder preferences in the "ask file" dialog box and shows the extension in the name field of the box also if the preferences of the Finder is set to false. So the extension is exposed in the ask file dialog with the risk that the user deletes it, this is why I needed to know if it's mandatary to have it or not in the filename.
Yes, I know, it is a complicated topic full of details, sorry about that ...
Maybe do you refer to this topic: http://forums.livecode.com/viewtopic.php?f=19&t=28238
? If so, get ready! There are still many things we need to talk, the sandbox is a hot topic and increasingly topical! hehehe