Doc: add a about_core.rst file to avoid duplication between index.rst and about.rst

1 files changed, 1 insertions, 17 deletions

diff --git a/docs/source/index.rst b/docs/source/index.rst
index 69f483ce..e9590d99 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -24,23 +24,7 @@ PROJ
 
 .. only:: html
 
-    PROJ is a generic coordinate transformation software that transforms geospatial
-    coordinates from one coordinate reference system (CRS) to another. This
-    includes cartographic projections as well as geodetic transformations.
-
-    PROJ includes :ref:`command line applications<apps>` for easy conversion of
-    coordinates from text files or directly from user input. In addition to the
-    command line utilities PROJ also exposes an
-    :ref:`application programming interface<reference>`, or API in short. The API
-    lets developers use the functionality of PROJ in their own software without having
-    to implement similar functionality themselves.
-
-    PROJ started purely as a cartography application letting users convert geodetic
-    coordinates into projected coordinates using a number of different cartographic
-    projections. Over the years, as the need has become apparent, support for datum
-    shifts has slowly worked its way into PROJ as well. Today PROJ supports more
-    than a hundred different map projections and can transform coordinates between
-    datums using all but the most obscure geodetic techniques.
+    .. include:: about_core.rst
 
     You can download the source code for PROJ on the :ref:`download section<download>`
     and find links to prepackaged executables in the