no difference at all but in nomenclature: .qtr is the primordial default suffix for session files, while the .qts is supposed the be equivalent and regular one as last "s" stands for "session";
functionally different is .qtt as for session templates and .qtz for zip-archive session file bundles.
no difference at all but in nomenclature: .qtr is the primordial default suffix for session files, while the .qts is supposed the be equivalent and regular one as last "s" stands for "session";
functionally different is .qtt as for session templates and .qtz for zip-archive session file bundles.
byee