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+Installation
+============
+
+1. System requirements
+~~~~~~~~~~~~~~~~~~~~~~
+
+Matlab (7.1 or later) or GNU Octave (4.0.0 or later).
+
+.. _installation-1:
+
+2. Installation
+~~~~~~~~~~~~~~~
+
+-  Extract source code to a directory.
+-  Enter the directory in Matlab or GNU Octave.
+-  Execute command ``setup``. You will see the following
+   sub-directories:
+
+   -  ``/data``: Stores test system data, simulation settings data, etc.
+   -  ``/example``: Some examples of using PowerSAS.m.
+   -  ``/output``: Stores test result data.
+   -  ``/internal``: Internal functions of PowerSAS.m computation core.
+   -  ``/util``: Auxiliary functions including data I/O, plotting, data
+      conversion, etc.
+   -  ``/logging``: Built-in logging system.
+   -  ``/doc``: Documentation.
+
+3. Test
+~~~~~~~
+
+-  Execute command ``initpowersas`` to initialize the environment, then
+   execute ``test_powersas`` to run tests. You should expect all tests
+   to pass.
+
+4. Initialization
+~~~~~~~~~~~~~~~~~
+
+To initialize PowerSAS.m, add the main directory of PowerSAS.m to your
+Matlab or GNU Octave path and run the command ``initpowersas``. This
+will ensure that all the functions of PowerSAS.m are added to the path
+and thus callable.