Forum OpenACS Development: Re: ANNOUNCE: NaviServer 4.99.8 available
Concerning ad_returnfile_background: it has the same interface like ns_returnfile. The changes for NaviServer in OpenACS are mostly due to using features of NaviServer not available in aolserver. If you get a recent version of OpenACS (e.g. the tar file), just grep for NaviServer, these should be pretty easy applicable for every OpenACS mutant.