From mboxrd@z Thu Jan  1 00:00:00 1970
From: Charles Berry <ccberry@ucsd.edu>
Subject: Re: Where does org-mode elisp hacking go?
Date: Wed, 13 Mar 2013 22:38:47 +0000 (UTC)
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Lawrence Bottorff <galaxybeinglambda <at> gmail.com> writes:

> 
> 

> I see on the org-hacks.html page lots of interesting elisp code. 

> If I wanted to use some of this (lots of this) it seems wrong to shove it 
> all in my .emacs file. My first guess would be to put what I want into 
> separate .el files, go to my .org file and do a load-file on the .el file 
> of hacks. But I really loath doing something that's not "best practice." 
> What's the best practice for enabling org-mode elisp hacks? And what if 
> I want to use just one hack for one project? With usual elisp-ing you can 
> simply evaluate region. Is that possible in conjunction with a .org file? 


Yes. But you might like to look at

   http://orgmode.org/worg/org-contrib/babel/intro.html#sec-8-2-1

which discusses "Emacs Initialization with Babel" for a comprehensive approach.

For a single project, you can but a src_block in the master that loads 
whatever is needed or use a file local variables block to load up the requisites.
See: Specifying File Variables in the emacs manual.