DIFF_PART_XFRF
if(!write_32(df, DIFF_PART_XFRF) ||
if(type != DIFF_PART_XFRF) {
if(!write_32(df, DIFF_PART_XFRF) || !write_8(df, commit)) {
if(!write_32(df, DIFF_PART_XFRF) ||
if(type != DIFF_PART_XFRF) {
if(type != DIFF_PART_XFRF) {