diff --git a/doc/source/main/application.rst b/doc/source/main/application.rst
new file mode 100644
index 0000000..88ce71d
--- /dev/null
+++ b/doc/source/main/application.rst
@@ -0,0 +1,85 @@
+
+Application
+-----------
+
+Remember,  always import library.
+
+.. code-block:: python
+
+    import easymacro as app
+
+
+Current doc
+^^^^^^^^^^^
+
+.. code-block:: python
+
+    doc = app.active
+    app.msgbox(doc.title)
+
+
+Iter docs
+^^^^^^^^^
+
+.. code-block:: python
+
+    for doc in app.docs:
+        app.msgbox(doc.title)
+
+
+Count
+^^^^^
+
+.. code-block:: python
+
+    count = len(app.docs)
+    app.msgbox(count)
+
+
+Get by name
+^^^^^^^^^^^
+
+.. code-block:: python
+
+    name = 'MyDoc.ods'
+    if name in app.docs:
+        doc = app.docs[name]
+        app.msgbox(doc.title)
+
+
+New
+^^^
+
+For default create new Calc document.
+
+.. code-block:: python
+
+    doc = app.docs.new()
+    app.msgbox(doc.type)
+
+For new Writer document.
+
+.. code-block:: python
+
+    doc = app.docs.new('writer')
+    app.msgbox(doc.type)
+
+Other documents.
+
+.. code-block:: python
+
+    doc = app.docs.new('draw')
+    app.msgbox(doc.type)
+
+    doc = app.docs.new('impress')
+    app.msgbox(doc.type)
+
+
+Open
+^^^^
+
+.. code-block:: python
+
+    path = '/home/mau/MyDoc.ods'
+    doc = app.docs.open(path)
+
diff --git a/doc/source/main/easymacro.rst b/doc/source/main/easymacro.rst
index 7133449..e597ef1 100644
--- a/doc/source/main/easymacro.rst
+++ b/doc/source/main/easymacro.rst
@@ -2,7 +2,18 @@
 Library easymacro.py
 ====================
 
-.. include:: 01_tools.rst
-.. include:: 02_tools.rst
+**easymacro.py** it's a library for easily develop macros en LibreOffice con Python. It is an abstraction layer between the extensive and complex LibreOffice API UNO and your code.
 
+Probably, your will be more happy if used it. :)
 
+You can used **easymacro.py** with any extension or directly in your macros.
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   tools_for_debug.rst
+   tools.rst
+   application.rst
+   calc.rst
+   writer.rst
diff --git a/doc/source/main/02_tools.rst b/doc/source/main/tools.rst
similarity index 99%
rename from doc/source/main/02_tools.rst
rename to doc/source/main/tools.rst
index 946128f..2cefda5 100644
--- a/doc/source/main/02_tools.rst
+++ b/doc/source/main/tools.rst
@@ -1,6 +1,6 @@
 
-1.2) Tools
-^^^^^^^^^^
+Tools
+-----
 
 Remember,  always import library.
 
diff --git a/doc/source/main/01_tools.rst b/doc/source/main/tools_for_debug.rst
similarity index 86%
rename from doc/source/main/01_tools.rst
rename to doc/source/main/tools_for_debug.rst
index 3879da2..322055c 100644
--- a/doc/source/main/01_tools.rst
+++ b/doc/source/main/tools_for_debug.rst
@@ -1,18 +1,6 @@
 
-**easymacro.py** it's a library for easily develop macros en LibreOffice con
-Python. It is an abstraction layer between the extensive and complex LibreOffice
-API UNO and your code.
-
-Probably, your will be more happy if used it. :)
-
-You can used **easymacro.py** with any extension or directly in your macros.
-
-
-1) Tools
---------
-
-1.1) For debug
-^^^^^^^^^^^^^^
+Tools for debug
+---------------
 
 **INFO_DEBUG**
 ^^^^^^^^^^^^^^
diff --git a/source/easymacro.py b/source/easymacro.py
index b8db956..3a8193c 100644
--- a/source/easymacro.py
+++ b/source/easymacro.py
@@ -2882,6 +2882,9 @@ class LOCalcRange(object):
         return
 
     def _cast(self, t, v):
+        if not t:
+            return v
+
         if t == datetime.date:
             nv = datetime.date.fromordinal(int(v) + DATE_OFFSET)
         else:
@@ -3958,6 +3961,7 @@ class LODocs(object):
             return doc
 
     def __len__(self):
+        # ~ len(self._desktop.Components)
         for i, _ in enumerate(self._desktop.Components):
             pass
         return i + 1
@@ -6659,48 +6663,6 @@ def get_fonts():
     return device.FontDescriptors
 
 
-# ~ From request
-# ~ https://github.com/psf/requests/blob/master/requests/structures.py#L15
-class CaseInsensitiveDict(MutableMapping):
-
-    def __init__(self, data=None, **kwargs):
-        self._store = OrderedDict()
-        if data is None:
-            data = {}
-        self.update(data, **kwargs)
-
-    def __setitem__(self, key, value):
-        # Use the lowercased key for lookups, but store the actual
-        # key alongside the value.
-        self._store[key.lower()] = (key, value)
-
-    def __getitem__(self, key):
-        return self._store[key.lower()][1]
-
-    def __delitem__(self, key):
-        del self._store[key.lower()]
-
-    def __iter__(self):
-        return (casedkey for casedkey, mappedvalue in self._store.values())
-
-    def __len__(self):
-        return len(self._store)
-
-    def lower_items(self):
-        """Like iteritems(), but with all lowercase keys."""
-        values = (
-            (lowerkey, keyval[1]) for (lowerkey, keyval) in self._store.items()
-        )
-        return values
-
-    # Copy is required
-    def copy(self):
-        return CaseInsensitiveDict(self._store.values())
-
-    def __repr__(self):
-        return str(dict(self.items()))
-
-
 # ~ https://en.wikipedia.org/wiki/Web_colors
 def get_color(value):
     COLORS = {