00000nz  a2200000n  4500
001  KSH2002030442
005  20021120163742
008  021120 n azknn|abn          |a a|a    | 
150  ▼aPOP(프로토콜)▲
450  ▼wr▼i영어▼apost office protocol▲
550  ▼wg▼a프로토콜(통신)[protocol]▲