What steps will reproduce the problem?
1. In a lout file produced by txt2tags, the only system include at the top of 
the file is '@SysInclude{ doc }'

2.This means that if you use a tagged area like this to insert lout math tags:
'''
@CentredDisplay @Math { int from {0} to {1} dx 
over sqrt {1 - x sup 2} = pi over 2 }
'''

Then Lout does not recognize the @Math tag.  
It needs @SysInclude{ math } at the top of the file as well.

3. There *is* a workaround. You can put
%!postproc(lout) : "@SysInclude { doc }" "@SysInclude { math } @SysInclude { 
doc }"

in the config area and it will work.

But it would be nice to have something like
%!style(lout) : math
and also
%!style(lout) : tbl
(I think Lout has a good table facility as well.)

Thanks for your wonderful software. I am just learning Lout as well, but I like 
the very simple syntax of t2t.  I am a very experience LaTeX user as well.

-David (USA)
jblxdwc@gmail.com



What is the expected output? What do you see instead?


What version of the product are you using? On what operating system?


Please provide any additional information below.