Paragraph indents in latex

When you want to realize paragraph indents in latex, you can use the following commands:

\usepackage{changepage} % add this to the head section

\begin{adjustwidth}{x cm}{y cm} %the paragraph indention on the left is x cm and the
                                                           one on the right is y cm.
  the paragraph you want to indent.....
\end{adjustwidth} 

From http://www.chinatex.org/bbs/forum.php?mod=viewthread&tid=7423