We are having some difficulties porting a CVF application, which have been tracked down to a misunderstanding of the /iface options.
If I understand correctly, the CVF option /iface:default (or, no such option specified), is equivalent to the IFL options /iface: default, or /Gm. The IFL .pdf User's Guide doesn't make it entirely clear whether these are the same. The same Guide shows /iface:stdref as the same as /Gz. It's not made clear whether CVF /iface:no_mixed_str_len_arg is equivalent to the IFL default, or whether IFL supports /iface:cref at all.