call(3,
     b = 2, c
)

gs(3, b = 2,
   c)

call(3, b = 2, c)

map(data, fun,
    x = 3, z = 33)

map2(dat1, data2, fun, x, y,
     z)

map2(dat1, data2, fun, x = 1, y = 2,
  z
)