diff -ura a/doc/healpy_zoomtool.rst b/doc/healpy_zoomtool.rst
--- a/doc/healpy_zoomtool.rst	2019-09-10 13:17:36.000000000 +0800
+++ b/doc/healpy_zoomtool.rst	2019-09-10 14:17:14.230737604 +0800
@@ -4,7 +4,7 @@
 
 
 :mod:`zoomtool` -- Interactive visualisation
-================================
+============================================
 
 Interactive map visualization
 -----------------------------
diff -ura a/INSTALL.rst b/INSTALL.rst
--- a/INSTALL.rst	2019-09-10 13:17:36.000000000 +0800
+++ b/INSTALL.rst	2019-09-10 14:16:27.437402127 +0800
@@ -10,7 +10,7 @@
 Only Linux and MAC OS X are supported, not Windows.
 
 Binary installation with conda (RECOMMENDED)
------------------------
+--------------------------------------------
 
 Conda forge provides a `conda
 channel <https://anaconda.org/conda-forge/healpy>`_ with a pre-compiled version of ``healpy``
@@ -20,7 +20,7 @@
     conda install healpy
     
 Source installation with Pip
----------------------------
+----------------------------
 
 It is possible to build the latest ``healpy`` with `pip <http://www.pip-installer.org>`_ ::
 
@@ -73,6 +73,7 @@
 If everything goes fine, you can test it::
 
     python
+
 >>> import matplotlib.pyplot as plt
 >>> import numpy as np
 >>> import healpy as hp