System Tables Views Oracle PLSQL

SQL>
SQL> select name, hint
  2  from user_outline_hints
  3  where rownum < 50
  4  /
NAME
------------------------------
HINT
--------------------------------------------------------------------------------
MYOUTLINE
FULL(@"SEL$1" "EMP"@"SEL$1")
MYOUTLINE
OUTLINE_LEAF(@"SEL$1")
MYOUTLINE
ALL_ROWS
NAME
------------------------------
HINT
--------------------------------------------------------------------------------
MYOUTLINE
OPTIMIZER_FEATURES_ENABLE('10.2.0.1')
MYOUTLINE
IGNORE_OPTIM_EMBEDDED_HINTS
SQL>
SQL>