1 | 5. te: Label Label   6. rho: Top 7. ds: Top 8. da: Top 9. de: Top 10. e: Top 11. s: Top 12. a: Top 13. x:Top.
list_accum(x,t.x
([[t]] 1of(e) s a mk_trace_env(nil,
te));x;v) ~ list_accum(x,t.x([[t]] 1of(e) s a niltrace());x;v) 14. x: Top list_accum(x,t.x
([[t]] 1of(e) s a mk_trace_env(nil,
te));x
([[u]] 1of(e) s a mk_trace_env(nil,
te));v) ~ list_accum(x,t....;x
(...);v) |