4D Language Commands by theme CommunicationsVersion: 21 R4 BETACommunicationsGET SERIAL PORT MAPPING ( numArray : Integer array ; nameArray : Text array ) RECEIVE BUFFER ( receiveVar : Text ) RECEIVE PACKET ( {docRef : Time ;} receiveVar : Text, Blob ; stopChar : Text )RECEIVE PACKET ( {docRef : Time ;} receiveVar : Text, Blob ; numBytes : Integer ) RECEIVE RECORD ({ aTable : Table }) RECEIVE VARIABLE ( variable : Variable ) SEND PACKET ( {docRef : Time ;} packet : Text, Blob ) SEND RECORD ({ aTable : Table }) SEND VARIABLE ( variable : Variable ) SET CHANNEL ( port : Integer {; settings : Integer} )SET CHANNEL ( operation : Integer {; document : Text } ) SET TIMEOUT ( seconds : Integer ) USE CHARACTER SET ( map : Text, Operator {; mapInOut : Integer} )