deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index 2b7d38b..b09b5f8 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
...
\section{Introduction}  Edge detection is \textbf{required \textbf{Boldface the words}required  for interpretation of gravity field data},and data,and  has been widely used in tectonic studies and mineral explorations\cite{Paterson_1985}. To gain a better understanding of gravity sources,\textit{a sources,\textit{Italic some words;}  a  variety of methods based on the use of directional} directional  derivatives \verb|verb code #include  using namespace std;|  of different orders have been developed to locate anomalous source boundaries.\\\verb|| boundaries.\\  \begin{itemize}  \item first1\item second2  \end{itemize}