PROCEDURE SDM_OPERATION_CLASS_SELECT ( P_CURSOR OUT    TYPES.TCURSOR
       , W_SOB_ID   IN    SDM_OPERATION_CLASS.SOB_ID%TYPE
  , W_ORG_ID   IN    SDM_OPERATION_CLASS.ORG_ID%TYPE
  , W_OP_CLASS_ID IN    SDM_OPERATION_CLASS.OP_CLASS_ID%TYPE
      , W_ENABLED_FLAG     IN    SDM_OPERATION_CLASS.ENABLED_FLAG%TYPE )
  IS
 
   V_LOCAL_DATE   DATE   := GET_LOCAL_DATE(W_SOB_ID);
  
  BEGIN
OPEN P_CURSOR FOR

SELECT SOC.OP_CLASS_CODE
  , SOC.OP_CLASS_DESCRIPTION 
  , EAPP_COMMON_G.GET_LOOKUP_DESC(SOC.SOB_ID, SOC.ORG_ID, 'OPERATION_WORKING_TYPE', SOC.WORKING_TYPE_LCODE) AS WORKING_TYPE_DESC
  , AC.ACCOUNT_CODE
  , AC.ACCOUNT_DESC
  , AC.ACCOUNT_CONTROL_ID
  , SOC.EFFECTIVE_DATE_FR
  , SOC.EFFECTIVE_DATE_TO
  , SOC.ENABLED_FLAG  
  , SOC.OP_CLASS_ID 
  , SOC.WORKING_TYPE_LCODE
FROM SDM_OPERATION_CLASS SOC
    , FI_ACCOUNT_CONTROL  AC
  WHERE SOC.ACCOUNT_CONTROL_ID    = AC.ACCOUNT_CONTROL_ID(+)
    AND SOC.SOB_ID     = W_SOB_ID
    AND SOC.ORG_ID     = W_ORG_ID
    AND SOC.OP_CLASS_ID    = NVL(W_OP_CLASS_ID, SOC.OP_CLASS_ID)
    AND ((W_ENABLED_FLAG = 'N' AND 1 = 1)
OR  (W_ENABLED_FLAG = 'Y' AND SOC.ENABLED_FLAG = 'Y'
   AND V_LOCAL_DATE  BETWEEN SOC.EFFECTIVE_DATE_FR
   AND NVL(SOC.EFFECTIVE_DATE_TO, V_LOCAL_DATE)))    
  ORDER BY SOC.OP_CLASS_CODE;  

  END;

문인데요

P_CURSOR 가 하는 역활과...

OPEN P_CURSOR FOR  <---- 이부분이 몬지 모르겠네요

고수분들 답변 부탁드리겠습니다 ^^