Add a margin line in the document
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निरंजन 
How to have a document in which we separate the margin from the body with a rule / line? I want to have a simple TeX rule for this purpose. Also I only want it to start from where I start writing the text and it should end where the text ends. Is there any package to achieve this?
Top Answer
samcarter 
One possible approach with the `mdframed` package:

```
\documentclass{article}

\usepackage{mdframed}
\usepackage{duckuments}

\newmdenv[
  topline=false,
  bottomline=false,
  leftline=false,
]{siderule}


\begin{document}

\begin{siderule}

\duckument

\end{siderule}

\end{document}
```
![Screen Shot 2020-04-26 at 20.15.41.png](/image?hash=cedb38ea6874d00ed5a29488f33ed04244abe3c5c2717592454f78956eb5d8d4)
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