From a5c41d6b19ba7095bea8ad894ac3fd8f72a9a38d Mon Sep 17 00:00:00 2001
From: Dhanya Thattil <dhanya.thattil@psi.ch>
Date: Thu, 29 Oct 2020 15:53:37 +0100
Subject: [PATCH] wip doc

---
 docs/src/installation.rst |  2 ++
 docs/src/slsreceiver.rst  | 15 +++++++++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/docs/src/installation.rst b/docs/src/installation.rst
index cca0d1d7d..7f187cd55 100644
--- a/docs/src/installation.rst
+++ b/docs/src/installation.rst
@@ -21,6 +21,8 @@
 Installation
 ==============================================
 
+.. _build from source using cmake:
+
 Build from source using CMake
 ---------------------------------
 
diff --git a/docs/src/slsreceiver.rst b/docs/src/slsreceiver.rst
index ec637b92d..0ce938363 100644
--- a/docs/src/slsreceiver.rst
+++ b/docs/src/slsreceiver.rst
@@ -151,9 +151,20 @@ Please refer to Receiver PC Tuning options and slsReceiver Tuning under `Trouble
 Using Callbacks
 ----------------
 
-| One can get a callback in the receiver for each frame to:
+One can get a callback in the receiver for each frame to:
     * manipulate the data that will be written to file, or
     * disable file writing in slsReceiver and take care of the data for each call back
 
-| When handling callbacks, the control should be returned as soon as possible, to prevent packet loss from fifo being full.
+When handling callbacks, the control should be returned as soon as possible, to prevent packet loss from fifo being full.
 
+**Example**
+    * `main cpp file <https://github.com/slsdetectorgroup/api-examples/blob/master/e4-receiver_callbacks.cpp>`_ 
+    * `cmake file <https://github.com/slsdetectorgroup/api-examples/blob/master/CMakeLists.txt>`_. 
+    * how to install the slsDetectorPackage is provided :ref:`here <build from source using cmake>`.
+    * compile the example **e4-rxr** by:
+
+        .. code-block:: bash
+
+            cmake ../path/to/your/source -DCMAKE_PREFIX_PATH=/path/to/sls/install
+            make
+