rem: memset(aData->bytes + aRange.position, 0, aRange.count);
add: memset(dataBytes + aRange.position, 0, aRange.count);
context: WMResetDataBytesInRange(WMData *aData, WMRange aRange) /*FOLD00*/{    wassertr(aRange.position < aData->length);    wassertr(aRange.count <= aData->length-aRange.position);    memset(aData->bytes + aRange.position, 0, aRange.count);}