« public sector body » means an entity within the « public sector »  the latter term as defined in article 3 of council regulation ( ec ) no 3603/93 of 13 december 1993 specifying definitions for the application of the prohibitions referred to in articles 104 and 104b ( 1 ) of the treaty ( 1 ) ( now articles 101 and 103 ( 1 ))  « settlement bank » means a participant whose pm account or subaccount is used to settle as payment instructions  « settlement central bank ( scb ) » means a eurosystem cb holding a settlement bank s pm account  « settlement finality directive » means directive 98/26 / ec of the european parliament and of the council of 19 may 1998 on settlement finality in payment and securities settlement systems ( 2 ) 