.tex generated by Pandoc is incomplete

I just started using Pandoc for converting my documents into several formats and it is simply awesome, especially when it comes to .tex to .doc conversion.

However, I'm having a problem with .doc to .tex conversion. The .tex file created by Pandoc is ... incomplete. It lacks basic commands like \documentclass{} and \begin{document}, \end{document}. Furthermore, the .tex file is filled with commands that seemingly depend on some other packages, like \LR{}. Such incompleteness makes my .tex file incompilable.

Is there any procedures that should be followed when one wants to compile .tex generated from Pandoc? Do I need to identify the missing commands and packages by inspection and add them myself?

Use pandoc -s ... or pandoc --standalone ....