message: Update the comment for the StepMarkerLocation enum.
diff: @@ -201,14 +201,15 @@ message DebugOptions {
  bool xla_allow_scalar_index_dynamic_ops = 107;
  enum StepMarkerLocation {
  - // Generate step mark at each iteration of top level while loop, which
  - // is assumed to be a training loop. This is the default.
  + // Generate a step marker at the program entry. This handles the case where
  + // each step is done by one or multiple program execution(s). Only the first
  + // program will be tagged for generating a step marker at the program entry.
  + // This is the default.
  STEP_MARK_AT_ENTRY = 0;
  - // Generate step mark at program entry. This handles the case where each
  - // step are done by one or multiple programs execution. Only the first
  - // program will be tagged for generating step mark at program entry.
  + // Generate a step marker at each iteration of the top level while loop,
  + // which is assumed to be a training loop.
  STEP_MARK_AT_TOP_LEVEL_WHILE_LOOP = 1;
  - // No step mark.
  + // No step marker generated.
  STEP_MARK_NONE = 2;
  }
  // Option to emit a target-specific marker to indicate the start of a training
  