diff --git a/src/hdf5_ops.py b/src/hdf5_ops.py
index 57aed5f..3dccd37 100644
--- a/src/hdf5_ops.py
+++ b/src/hdf5_ops.py
@@ -19,6 +19,16 @@ import json
 import copy
 
 class HDF5DataOpsManager():
+
+    """
+    A class to handle HDF5 file operations.
+
+    Parameters:
+        path_to_file : str
+            path/to/hdf5file.
+        mode : str
+            'r' or 'r+' read or read/write mode only when file exists
+    """
     def __init__(self, file_path, mode = 'r+') -> None:
 
         if mode in ['r','r+']:
@@ -549,11 +559,5 @@ def get_groups_at_a_level(file: h5py.File, level: str):
     return groups
 
 
-def annotate_root_dir(filename,annotation_dict: dict):
-    with h5py.File(filename,'r+') as file:
-        file.attrs.update(annotation_dict)
-        #for key in annotation_dict:
-        #    file.attrs.create('metadata_'+key, annotation_dict[key])
-