diff --git a/Pipfile b/Pipfile
index b5846df..2c0f00c 100644
--- a/Pipfile
+++ b/Pipfile
@@ -6,6 +6,7 @@ verify_ssl = true
 [dev-packages]
 
 [packages]
+sphinx = "*"
 
 [requires]
 python_version = "3.8"
diff --git a/datalite/datalite_decorator.py b/datalite/datalite_decorator.py
index 171ffca..b3d5bad 100644
--- a/datalite/datalite_decorator.py
+++ b/datalite/datalite_decorator.py
@@ -1,8 +1,14 @@
+"""
+Defines the Datalite decorator that can be used to convert a dataclass to
+a class bound to a sqlite3 database.
+"""
+
 from typing import Dict, Optional, List, Callable
 from dataclasses import Field, asdict
 import sqlite3 as sql
 from .commons import _convert_sql_format, _convert_type
 
+
 def _get_default(default_object: object, type_overload: Dict[Optional[type], str]) -> str:
     """
     Check if the field's default object is filled,
@@ -90,8 +96,14 @@ def _remove_entry(self) -> None:
     remove_from(self.__class__, getattr(self, 'obj_id'))
 
 
-def datalite(db_path: str, type_overload: Optional[Dict[Optional[type], str]] = None,
-             *args, **kwargs) -> Callable:
+def datalite(db_path: str, type_overload: Optional[Dict[Optional[type], str]] = None) -> Callable:
+    """Bind a dataclass to a sqlite3 database. This adds new methods to the class, such as
+    `create_entry()`, `remove_entry()` and `update_entry()`.
+
+    :param db_path: Path of the database to be binded.
+    :param type_overload: Type overload dictionary.
+    :return: The new dataclass.
+    """
     def decorator(dataclass_: type, *args_i, **kwargs_i):
         type_table: Dict[Optional[type], str] = {None: "NULL", int: "INTEGER", float: "REAL",
                                                  str: "TEXT", bytes: "BLOB"}
diff --git a/datalite/fetch.py b/datalite/fetch.py
index 12cf4b4..1b9d164 100644
--- a/datalite/fetch.py
+++ b/datalite/fetch.py
@@ -3,9 +3,10 @@ from typing import List, Tuple, Any
 from .commons import _convert_sql_format
 
 
-def insert_pagination(query: str, page: int, element_count: int) -> str:
+def _insert_pagination(query: str, page: int, element_count: int) -> str:
     """
     Insert the pagination arguments if page number is given.
+
     :param query: Query to insert to
     :param page: Page to get.
     :param element_count: Element count in each page.
@@ -20,6 +21,7 @@ def is_fetchable(class_: type, obj_id: int) -> bool:
     """
     Check if a record is fetchable given its obj_id and
     class_ type.
+
     :param class_: Class type of the object.
     :param obj_id: Unique obj_id of the object.
     :return: If the object is fetchable.
@@ -36,6 +38,7 @@ def is_fetchable(class_: type, obj_id: int) -> bool:
 def _get_table_cols(cur: sql.Cursor, table_name: str) -> List[str]:
     """
     Get the column data of a table.
+
     :param cur: Cursor in database.
     :param table_name: Name of the table.
     :return: the information about columns.
@@ -47,6 +50,7 @@ def _get_table_cols(cur: sql.Cursor, table_name: str) -> List[str]:
 def fetch_equals(class_: type, field: str, value: Any, ) -> Any:
     """
     Fetch a class_ type variable from its bound db.
+
     :param class_: Class to fetch.
     :param field: Field to check for, by default, object id.
     :param value: Value of the field to check for.
@@ -67,6 +71,7 @@ def fetch_equals(class_: type, field: str, value: Any, ) -> Any:
 def fetch_from(class_: type, obj_id: int) -> Any:
     """
     Fetch a class_ type variable from its bound dv.
+
     :param class_: Class to fetch from.
     :param obj_id: Unique object id of the object.
     :return: The fetched object.
@@ -80,6 +85,7 @@ def fetch_from(class_: type, obj_id: int) -> Any:
 def _convert_record_to_object(class_: type, record: Tuple[Any], field_names: List[str]) -> Any:
     """
     Convert a given record fetched from an SQL instance to a Python Object of given class_.
+
     :param class_: Class type to convert the record to.
     :param record: Record to get data from.
     :param field_names: Field names of the class.
@@ -100,6 +106,7 @@ def fetch_if(class_: type, condition: str, page: int = 0, element_count: int = 1
     """
     Fetch all class_ type variables from the bound db,
     provided they fit the given condition
+
     :param class_: Class type to fetch.
     :param condition: Condition to check for.
     :param page: Which page to retrieve, default all. (0 means closed).
@@ -110,7 +117,7 @@ def fetch_if(class_: type, condition: str, page: int = 0, element_count: int = 1
     table_name = class_.__name__.lower()
     with sql.connect(getattr(class_, 'db_path')) as con:
         cur: sql.Cursor = con.cursor()
-        cur.execute(insert_pagination(f"SELECT * FROM {table_name} WHERE {condition}", page, element_count))
+        cur.execute(_insert_pagination(f"SELECT * FROM {table_name} WHERE {condition}", page, element_count))
         records: list = cur.fetchall()
         field_names: List[str] = _get_table_cols(cur, table_name)
     return tuple(_convert_record_to_object(class_, record, field_names) for record in records)
@@ -121,6 +128,7 @@ def fetch_where(class_: type, field: str, value: Any, page: int = 0, element_cou
     Fetch all class_ type variables from the bound db,
     provided that the field of the records fit the
     given value.
+
     :param class_: Class of the records.
     :param field: Field to check.
     :param value: Value to check for.
@@ -134,6 +142,7 @@ def fetch_where(class_: type, field: str, value: Any, page: int = 0, element_cou
 def fetch_range(class_: type, range_: range) -> tuple:
     """
     Fetch the records in a given range of object ids.
+
     :param class_: Class of the records.
     :param range_: Range of the object ids.
     :return: A tuple of class_ type objects whose values
@@ -145,6 +154,7 @@ def fetch_range(class_: type, range_: range) -> tuple:
 def fetch_all(class_: type, page: int = 0, element_count: int = 10) -> tuple:
     """
     Fetchall the records in the bound database.
+
     :param class_: Class of the records.
     :param page: Which page to retrieve, default all. (0 means closed).
     :param element_count: Element count in each page.
@@ -158,7 +168,7 @@ def fetch_all(class_: type, page: int = 0, element_count: int = 10) -> tuple:
     with sql.connect(db_path) as con:
         cur: sql.Cursor = con.cursor()
         try:
-            cur.execute(insert_pagination(f"SELECT * FROM {class_.__name__.lower()}", page, element_count))
+            cur.execute(_insert_pagination(f"SELECT * FROM {class_.__name__.lower()}", page, element_count))
         except sql.OperationalError:
             raise TypeError(f"No record of type {class_.__name__.lower()}")
         records = cur.fetchall()