b.build("PO", "850", "Purchase Order",
d::TableDef.("1 - Header",
s:: ST.use( 10, r::Mandatory, d::RepeatCount.bounded(1)),
s::BEG.use( 20, r::Mandatory, d::RepeatCount.bounded(1)),
s::NTE.use( 30, r::Optional, d::RepeatCount.bounded(10)),
s::PER.use( 60, r::Optional, d::RepeatCount.bounded(3)),
d::LoopDef.build("N1", d::RepeatCount.bounded(200),
s:: N1.use( 310, r::Optional, d::RepeatCount.bounded(1)))),
d::TableDef.("2 - Detail",
d::LoopDef.build("PO1", d::RepeatCount.bounded(10000),
s::PO1.use( 10, r::Mandatory, d::RepeatCount.bounded(1)),
d::LoopDef.build("PID", d::RepeatCount.bounded(1000),
s::PID.use( 50, r::Optional, d::RepeatCount.bounded(1))),
d::LoopDef.build("DTM", d::RepeatCount.bounded(10),
s::DTM.use(210, r::Optional, d::RepeatCount.bounded(1))),
d::LoopDef.build("N9", d::RepeatCount.bounded(1000),
s:: N9.use(330, r::Optional, d::RepeatCount.bounded(1))))),
d::TableDef.("3 - Summary",
s::CTT.use( 10, r::Mandatory, d::RepeatCount.bounded(1)),
s:: SE.use( 30, r::Mandatory, d::RepeatCount.bounded(1))))