if stream is also a sheet, use the medium's copy-area
if stream is also a sheet, use the medium's copy-area

onixie/mcclim,onixie/mcclim,swflint/McCLIM,onixie/mcclim,slyrus/mcclim,swflint/McCLIM,antifuchs/mcclim,antifuchs/mcclim,slyrus/mcclim,swflint/McCLIM