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# `:tray`, `|?`, "barwut", `{$tray p/twig}`

`|-` with hidden context.

Produces: a lead trap with expression `p` whose context is hidden to avoid type conflicts.

Examples:

            > |?(20)
        < 1?aoy
          { {a/^#3.?({i/@ud t/#3} ^#2.?({i/@ud t/#2} it(@ud))) our/@p now/@da eny/@uvI}
            $~
            <282.ucw 42.juj 402.arm 110.jyx 1.ztu $151>
          }
        >    ~zod/try=> +:|?(20)
        > +:|.(20)
        [ [ a=[i=1 t=[i=2 t=[i=3 t=~]]]
            our=~sivtyv-barnel
            now=~2016.3.29..04.14.18..9a26
            eny=0v16.dkepv.qm6er.7v2mh.kcdva.oisv9.th4dl.era7v.pj315.fd6la.76d34
          ]
          ~
          <282.ucw 42.juj 402.arm 110.jyx 1.ztu $151>
        ]

As demonstrated above, a lead core's payload cannot be read or written.