code: def tooltip_text(obs):
      temp = (
          "</br>"
          + "id: "
          + str(obs["_ids_"])
          + "</br>"
          + "prediction: "
          + str(np.around(obs["_yhat_"], 3))
          + "</br>"
          + str(obs["_vname_"])
          + ": "
          + str(obs[obs["_vname_"]])
          + "</br></br>"
      )
  
      for index, value in obs.items():
          if index not in [
              "_ids_",
              "_yhat_",
              obs["_vname_"],
              "_x_",
              "_label_",
              "_vname_",
              "_original_",
          ]:
              temp += str(index) + ": " + str(value) + "</br>"
          if len(temp) > 500:
              temp += "... too many variables"
              break
      return temp
  
label_desc: Use image node_id 1 for calling a global function with example usage: tooltip_text(obs) and returns: temp