diff --git a/CHANGELOG b/CHANGELOG
index 5d64442..3cb28e5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+v 0.16.1 [01-jul-2021]
+    - Change property is_connected in db
+    - Update doc
+
 v 0.16.0 [20-jun-2021]
     - Add connection for postgres and mariadb
     - Fix in call macro Basic
diff --git a/doc/source/main/application.rst b/doc/source/main/application.rst
index a1be32d..6ecfa16 100644
--- a/doc/source/main/application.rst
+++ b/doc/source/main/application.rst
@@ -209,6 +209,30 @@ To PDF
 Export
 ^^^^^^
 
+* Export common formats
+
+.. code-block:: python
+
+    doc = app.docs.new()
+    path = '/home/mau/myfile.xlsx'
+    filter_name = 'xlsx'
+    doc.export(path, filter_name)
+
+    path = '/home/mau/myfile.xls'
+    filter_name = 'xls'
+    doc.export(path, filter_name)
+
+    doc = app.docs.new('writer')
+    path = '/home/mau/myfile.docx'
+    filter_name = 'docx'
+    doc.export(path, filter_name)
+
+    path = '/home/mau/myfile.doc'
+    filter_name = 'doc'
+    doc.export(path, filter_name)
+
+* For all support formats look `Apendix`_
+
 
 Fonst
 ^^^^^
@@ -262,3 +286,4 @@ Title
 
 .. _dispatch command: https://wiki.documentfoundation.org/Development/DispatchCommands
 .. _support filters: https://help.libreoffice.org/latest/en-US/text/shared/guide/convertfilters.html
+.. _Apendix: apendix