AREF_COMMON
if (aref == AREF_COMMON)
if (CR_AREF(cmd->chanlist[0]) == AREF_COMMON)
if (CR_AREF(cmd->chanlist[i]) == AREF_COMMON)
if (aref == AREF_COMMON)
case AREF_COMMON:
case AREF_COMMON:
case AREF_COMMON: