Or: def of Base
Import: import Base
Lines 148-149 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=148&end_line=149

import Base

def Or(-A: Type, -B: Type) -> Type:
  Either<&1, &1, A, B>

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