B737-700 FLT CREW HAS A TRACK HDG DEV DURING CRUISE.

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DURING PREFLT PLANNING; I RECEIVED THE FOLLOWING CLRNC FROM CLRNC DELIVERY IN PHX: 'SJN 3 DEP.SJN.J18.GCK; AS FILED.FL' WHICH I COMPARED TO OUR FILED CLRNC OF 'SJN3.ABQ.CIM.J96.SLN....' PRIOR TO CDU PROGRAMMING; I CHKED THE FILED RTE ON THE HIGH CHART; TRACING BACK FROM SLN TOWARDS PHX ON J18/J96; WHICH ARE CO-LOCATED E OF GCK. I MISSED THE FACT THAT J18 AND J96 SPLIT W OF GCK AND I INTERPED THE ISSUED CLRNC AS BEING THE SAME AS THE FILED CLRNC; EVEN THOUGH CLRNC DELIVERY DID NOT SAY 'AS FILED.' IT HAS BEEN MY EXPERIENCE ON NUMEROUS OCCASIONS THAT CLRNC DELIVERY WILL ISSUE A CLRNC LISTING MULTIPLE POINTS ALONG THE FILED RTE; THEN 'AS FILED' FOR THE REMAINDER OF THE CLRNC; RATHER THAN JUST SAYING 'CLRED AS FILED' (FOR THE ENTIRE RTE). THIS GIVES THE IMPRESSION THAT THE CLRNC IS NOT ALONG THE FILED RTE; UNTIL THE RTE IS CHKED; POINT BY POINT; ON THE CHARTS. I DID NOT VERIFY THE RTE ON THE CHART CAREFULLY ENOUGH THIS TIME AND WAS COMPLACENT IN ASSUMING THAT THIS WAS ANOTHER SUCH SITUATION. I; THEREFORE; PROGRAMMED THE CDU WITH THE COMPANY RTE (AS FILED) AND BRIEFED THE CAPT THAT WE HAD BEEN CLRED AS FILED. IN REALITY; WE WERE PROGRAMMED TO FLY ABQ.CIM.GCK WHEN WE SHOULD HAVE BEEN PROGRAMMED TO FLY ABQ.FTI.GCK. SHORTLY AFTER XING OVER ABQ AND TURNING TOWARDS CIM (WHEN WE SHOULD HAVE TURNED TOWARDS FTI); ZAB GAVE US A VECTOR OFF COURSE AND QUERIED US ABOUT OUR CLRNC. THE CAPT REPLIED WE HAD BEEN CLRED AS FILED; AS I HAD BRIEFED HIM. CTR CALLED BACK A LITTLE WHILE LATER WITH A PHONE NUMBER FOR US TO CALL AFTER LNDG. AFTER RETRACING THE CLRNC ON THE CHART; I REALIZED MY ERROR AND EXPLAINED IT TO THE CAPT. HE CONTACTED THE ZAB SUPVR AS DIRECTED AFTER LNDG AND EXPLAINED THE COURSE OF EVENTS. HE WAS TOLD NO ACFT SEPARATION HAD BEEN REQUIRED AND NO PAPERWORK WOULD BE INITIATED. THE ERROR WAS ENTIRELY MINE. BY BEING COMPLACENT AND HURRYING THROUGH PROGRAMMING THE CDU; I INADVERTENTLY SET THE STAGE FOR A VERY EMBARRASSING AND POTENTIALLY DANGEROUS SITUATION. WHENEVER ISSUED ANY CLRNC OTHER THAN 'AS FILED;' I WILL GET OUT MY HIGHLIGHTER AND MORE CAREFULLY VERIFY THE EXACT ROUTING ON THE CHART AND CALL CLRNC DELIVERY BACK WITH ANY QUESTIONS. I WILL ALSO READ THE EXACT CLRNC ISSUED DURING MY CLRNC BRIEFING TO THE CAPT; EVEN IF I BELIEVE IT IS IDENTICAL TO THE FILED RTE. THIS WILL ALERT HIM TO VERIFY THAT I HAVE INTERPED THE CLRNC ISSUED CORRECTLY.