Added structuring the input file subsection in the manual

doc/manual/manual.tex

@@ -210,7 +210,8 @@ \section{Run-time input parameters}
 \label{sec:parameters}
 The underlying description of the input parameters also includes a Standard/Developer label, which signifies whether an input parameter is
 a standard one, or is an expert level one for development purposes. The default values of the development level parameters are good enough
-for almost all cases. Please contact the developers if just using standard parameters did not work for your problem. 
+for almost all cases. Please contact the developers if just using standard parameters did not work for your problem. For user convenience,
+all input parameters are also indexed at the end of this manual in Section~\ref{sec:runtime-parameter-index-full}.
 % now include a file that describes all currently available run-time parameters
 \input{parameters}
 

doc/manual/rundftfe.tex

@@ -6,4 +6,38 @@
 \begin{verbatim}
  mpirun -n N ./main parameterFile.prm
 \end{verbatim}
-to run with N processors. In the above, an input file with \verb|.prm| extension is used. This file contains user-defined parameters as described in Section~\ref{sec:parameters}. For the structure of the input \verb|.prm| file, please follow the examples in the \verb|/dftfe/demo/| folder.
+to run with N processors. 
+\subsection{Structuring the input file}
+In the above, an input file with \verb|.prm| extension is used. This file contains input parameters as described in Section~\ref{sec:parameters}. All input parameters are also conveniently indexed at the end of this manual in Section~\ref{sec:runtime-parameter-index-full}. There are two types of parameters: ``{\it Global parameters}" and ``{\it Parameters in section A/B/..}". This can be seen directly in Section~\ref{sec:parameters}, where each parameter belongs to a group of parameters under the headings: ``{\it Global parameters}" or ``{\it Parameters in section A/B/..}". In ``{\it Parameters in section A/B/..}", {\it A} refers to the primary subsection name, {\it B} if present refers to a subsection inside {\it A}, and so on. 
+
+First, lets consider how to use a parameter named \verb|PARAMETER GLOBAL| under the heading ``{\it Global parameters}". To set it to a value, say \verb|value| in the \verb|.prm| file, directly use
+\begin{verbatim}
+ set PARAMETER GLOBAL=value
+\end{verbatim}
+Next consider a parameter named \verb|PARAMETER SUBSECTION| under the heading ``{\it Parameters in section A}". To set it to a value, say \verb|value| in the \verb|.prm| file, use 
+\begin{verbatim}
+subsection A
+ set PARAMETER SUBSECTION=value
+end
+\end{verbatim}
+Finally, consider a nested parameter named \verb|PARAMETER SUBSUBSECTION| under the heading ``{\it Parameters in section A/B}". To set it to a value, say \verb|value| in the \verb|.prm| file, use 
+\begin{verbatim}
+subsection A
+ subsection B
+ set PARAMETER SUBSUBSECTION=value
+ end
+end
+\end{verbatim}
+One final note- more than one parameter could be used inside the same \verb|subsection|. For example
+\begin{verbatim}
+subsection A
+ set PARAMETER SUBSECTION 1=value1
+ set PARAMETER SUBSECTION 2=value2
+ subsection B
+ set PARAMETER SUBSUBSECTION 1=value1
+ set PARAMETER SUBSUBSECTION 2=value2
+ end
+end
+\end{verbatim}
+\subsection{Running a demo example}
+Please follow the examples in the \verb|/dftfe/demo/| folder.