Spell checking a Lout document?

I have just finished writing my great 15,000 page magnum opus, full of 
genius math, tables, and so on, entirely in Lout.  Hundreds of *.lt 
files @Included in a main Lout file.  Now, before I vanity publish it 
and try to sell a copy to Mom, I wonder if I've made any silly little typos.

What are practical ways to spell-check these .lt files?   Obviously an 
ordinary everyday spell checker will barf on all the @Something Lout 
keywords and maybe trip over the punctuation marks, although most of 
this source text is just regular text which could go through a spell 
checker fine.

Perhaps there's a filter that can extract all the straight text, 
preening out simple markups such as @I, and bypassing all the structural 
stuff and non-text like sections, math, tables etc., making a simple 
text file one can check?   OTOH, maybe there's a way to spell check the 
final .ps or .pdf file?  (Besides paying some unfortunate Human to 
proofread it.)

I'm on Linux so naturally I prefer solutions that would work on that 
platform, or multiplatform.

-- 
Daren Scot Wilson
Escondido California
[email protected]
http://www.darenscotwilson.com
http://www.jeffcottwilson.com
http://toysihad.wordpress.com