DIS version of the reference software. Corresponding document is here: https://sd.iso.org/documents/ui/#!/browse/iso/iso-iec-jtc-1/iso-iec-jtc-1-sc-29/iso-iec-jtc-1-sc-29-wg-1/library/6/106-Online/OUTPUT%20N-Documents/wg1n101095-106-CPM-DIS%206.1737759609062