Nat.add: def of Base
Import: import Base
Lines 676-681 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=676&end_line=681

import Base

def Nat.add(a: Nat, b: Nat) -> Nat:
  match a:
    case 0n:
      b
    case 1n+p:
      1n+Nat.add(p, b)

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat