Before an upgrade, rollswap, or just for good hygiene, its good to know which CL commands have had their command defaults changed. Here's an approach that works all the way back to IBM i 7.2.

change command default.sql

--
-- Which CL commands have had their parameter defaults changed?
-- (On IBM i 7.3 and higher)
--
with libs (lib) as (
    select objname
      from table (
          qsys2.OBJECT_STATISTICS('*ALLAVL', '*LIB')
        )
  )
  select lib, objname as cmd, cmds.apar_id, cmds.*
    from libs, table (
        qsys2.OBJECT_STATISTICS(lib, '*CMD')
      ) as cmds
    where cmds.apar_id = 'CHGDFT';
stop;
    
--
-- Which CL commands have had their parameter defaults changed?
-- (On IBM i 7.2 only... if you have SF99702 720 DB2 for IBM i - level 27)
--
with libs (lib) as (
    select objname
      from table (
          qsys2.OBJECT_STATISTICS('*ALLAVL', '*LIB')
        )
  )
  select lib, objname as cmd, cmds.sql_object_type, cmds.*
    from libs, table (
           qsys2.OBJECT_STATISTICS(lib, '*CMD')
         ) as cmds
    where cmds.sql_object_type = 'CHGDFT';
    
    

Thank you Scott! this is very helpful!!

This is Important when you working on a new system ... ( Preparing for Version Upgrade ...)