This command will refine an item in the specified equipment slot of the invoking
character by +1. For a list of equipment slots see 'getequipid'. This command
will not only add the +1, but also display a 'refine success' effect on the
character and put appropriate messages into their chat window. It will also give
the character fame points if a weapon reached +10 this way, even though these
will only take effect for blacksmith who will later forge a weapon.

The official scripts seem to use the 'successrefitem' command as a function
instead: 'successrefitem(<number>)' but it returns nothing on the stack.
This is since jAthena, so probably nobody knows for sure why is it so.