What happens when someone's site goes off line and their content is no longer available and not on the DLS? Can someone that has it post it to the DLS, or make it available on their site? I ask because I downloaded Carlsbad Steam Locomotive Works Polar Express Route. He provided a Word Doc with links to all the 3rd party dependencies. Problem is, a couple of them no longer have their sites up, and their content is not on the DLS. CLSW obviously has them, as the route is supplied by them, but the developers is really careful about not posting other peoples work on his site. (Just the download list from DLS is HUGE . . . no more like ginormous.
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Am curious how this is handled.

Am curious how this is handled.