DEPARTING EWR; MD80 FLT CREW IS CONFUSED BY UNIQUE FORMAT OF COMMERCIAL CHART TO PARKE INTXN.

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I LOADED THE FMS PER OUR PDC AND FLT PLAN; TO WIT: 'EWR PARKE J6 LIT BYP5 DFW.' I THEN SCROLLED THROUGH THE RTE PAGE AND NO DISCREPANCIES APPEARED; ACTIVATED THE RTE; AND SCROLLED THROUGH THE LEGS PAGE WITH NO DISCREPANCIES. I REVIEWED THE COM CHARTS AND NOTICED WE HAD TO BE RADAR VECTORED BY ATC TO PARKE; SINCE THE DEPICTED RADIAL FROM SBJ IS NOT A ROUTE STRUCTURE AIRWAY; RATHER; A FIX IDENTIFICATION RADIAL OFF OF SBJ. DURING CLBOUT WE FLEW THE 190 AND 220 DEG HEADING AS SPECIFIED IN THE EWR7 DEP. UPON CONTACT WITH DEP; THE CTLR CLEARED US TO CLB TO 11000 FT; THEN WE WERE INSTRUCTED TO CONTACT ANOTHER DEP CTLR. UPON CONTACT WITH THIS CTLR WE WERE CLRED DIRECT SBJ; THEN FLT PLAN ROUTE AS FILED. I BEGAN THE CLB; AND THE CAPT CHKED THE COM CHARTS AND TOLD THE CTLR THAT THE SBJ FIX WAS NOT ON OUR FLT PLAN. THE CTLR STATED IT WAS ON THE EWR7 AND LEVELED US AT 6000 FT AND GAVE US A HEADING OF 330 DEGS. AFTER APPROX ONE MIN; HE GAVE US A HEADING OF 300 DEGS TO JOIN THE AIRWAY (J6); AND CLRED US TO CLB TO 11000 FT. WE DID NOT EXPERIENCE ANY CONFLICTS WITH OTHER ACFT; AND DISCOVERED THAT THE SUBSEQUENT VECTORING TOOK US ALMOST DIRECT TO PARKE. IN ALL MY 14 YEARS OF FLYING THIS DEP OUT OF EWR; I HAVE ALWAYS RECEIVED RADAR VECTORS TO THE INITIAL FIX AS REPRESENTED ON THE FLT PLAN AND PDC.SUPPLEMENTAL INFO FROM ACN 727168: AFTER REACHING CRUISE ALT THE FO AND I TOOK THE TIME TO LOOK AT THE DEP PROC AGAIN AND NOTICED A ROUTING BOX IN THE BOTTOM R CORNER OF THE PLATE WHICH SHOWED ROUTING AFTER THE INITIAL CLB PROC. THIS IS THE FIRST TIME I HAVE EVER SEEN A DEP PLATE PRESENTED THIS WAY.