code: def simple_example(step):
      # Text summaries log arbitrary text. This can be encoded with ASCII or
      # UTF-8. Here's a simple example, wherein we greet the user on each
      # step:
      greeting = tf.constant("hello from step %d! 😊" % step)
      tf.summary.text("greeting", greeting, step)
  
file_path: tensorboard/tensorboard/plugins/text/text_demo.py
imports: from absl import app
  from absl import logging
  import tensorflow
label_desc: Use image node_id 1 for calling a global function with example usage: simple_example(step) without return types