diff --git a/fms_dgt/dataloaders/default.py b/fms_dgt/dataloaders/default.py
index eae5744a..17147144 100644
--- a/fms_dgt/dataloaders/default.py
+++ b/fms_dgt/dataloaders/default.py
@@ -10,7 +10,13 @@
 
 @register_dataloader("default")
 class DefaultDataloader(BaseDataloader):
-    """Base Class for all dataloaders"""
+    """
+    The default dataloader takes a datastore and iterates over it.
+
+    @param state_datastore : A data store.
+    @param loop_over_data  : If true, it wraps around when it reaches the end of the iterator.
+
+    """
 
     def __init__(
         self,
diff --git a/fms_dgt/datastores/default.py b/fms_dgt/datastores/default.py
index 512bcfee..65dbcd10 100644
--- a/fms_dgt/datastores/default.py
+++ b/fms_dgt/datastores/default.py
@@ -20,7 +20,22 @@
 
 @register_datastore("default")
 class DefaultDatastore(BaseDatastore):
-    """Base Class for all data stores"""
+    """
+    The default datastore is a data store that takes a name of a `.jsonl`,
+    `.json`, `.yaml`, or `parquet` file, loads it, and returns an iterator
+    over it.
+
+    If none of the filename extension matches, it attempts to give the first
+    argument to huggingface's `datasets.load_dataset` function to load the data, and returns an iterator over it.
+
+    It also has an ability to dump the data into a file.
+
+    @param output_dir  : The destination directory for writing the data.
+    @param data_format : The data format for writing the data. It is not used for loading; The format is guessed from data_path.
+    @param data        : A list. Data loaded from the files are concatenated with this list.
+    @param data_path   : The path to the file to load. If it is a list, it is interpreted as the arguments to huggingface's `datasets.load_dataset` .
+
+    """
 
     def __init__(
         self,
diff --git a/templates/generator/template.py b/templates/generator/template.py
index f83e3948..e0c712ce 100644
--- a/templates/generator/template.py
+++ b/templates/generator/template.py
@@ -12,7 +12,7 @@
 
 @register_block("template_generator")
 class TemplateGenerator(BaseGeneratorBlock):
-    """Base Class for all Generators"""
+    """TODO: Copy and edit this template to implement your own generator class"""
 
     def __init__(self, name: str, config: Dict, **kwargs: Any) -> None:
         super().__init__(name, config, **kwargs)
diff --git a/templates/validator/template.py b/templates/validator/template.py
index 92da5e6a..485c403d 100644
--- a/templates/validator/template.py
+++ b/templates/validator/template.py
@@ -12,7 +12,7 @@
 
 @register_block("template_validator")
 class TemplateValidator(BaseValidatorBlock):
-    """Base Class for all Validators"""
+    """TODO: Copy and edit this template to implement your own validator class"""
 
     def __init__(self, name: str, config: Dict) -> None:
         super().__init__(name, config)