Updated comments

encord/objects/classification_instance.py

@@ -157,7 +157,7 @@ def _set_for_ranges(
         """
         At this point, this classification instance operates on ranges, NOT on frames.
         We therefore leave only FRAME 0 in the map.The frame_data for FRAME 0 will be
-        treated as the data for all "frames" in this classification instance.
+        treated as the data the entire classification instance.
         """
         self._set_frame_and_frame_data(
             frame=0,
@@ -691,6 +691,8 @@ def _check_within_range(self, frame: int) -> None:
         if frame < 0 or frame >= self._last_frame:
             raise LabelRowError(
                 f"The supplied frame of `{frame}` is not within the acceptable bounds of `0` to `{self._last_frame}`."
+                f"Note: for non-geometric data (e.g. {DataType.AUDIO} and {DataType.PLAIN_TEXT}), "
+                f"the entire file only has 1 frame."
             )
 
     def _is_classification_already_present(self, frames: Iterable[int]) -> Set[int]: