just delete the packages you don't what from (setq
org-latex-default-packages-ali
st
      '(("AUTO" "inputenc" t)
    ("" "lmodern" nil)
    ("T1" "fontenc" nil)

    ("" "fixltx2e" nil)
;    ("" "charter" nil) ;; a decent font
;    ("expert" "mathdesign" nil)
    ("" "graphicx" t)
    ("" "longtable" nil)
    ("" "float" nil)
    ("" "wrapfig" nil)
    ("" "rotating"  nil)
    ("normalem" "ulem" t)
    ("" "amsmath" t)
    ("" "textcomp" nil)
    ("" "marvosym" t)
    ("" "wasysym" t)
    ("" "amssymb" t)
    ("" "amsmath" t)
    ("version=3" "mhchem" t)
    ("numbers,super,sort&compress" "natbib" t)
    ("" "natmove" nil)
    ("" "url" t)
    ("" "minted" nil)
    ("" "underscore" t)
    ("linktocpage,pdfstartview=Fit
H,colorlinks,
linkcolor=blue,anchorcolor=blue,
citecolor=blue,filecolor=blue,menucolor=blue,urlcolor=blue"
     "hyperref" nil)
    ("" "attachfile" nil)))

John

-----------------------------------
John Kitchin
Associate Professor
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
http://kitchingroup.cheme.cmu.edu



On Tue, May 6, 2014 at 10:23 AM, Roger Mason <rmason@mun.ca> wrote:

> hello,
>
>
> On 05/06/14 11:48, John Kitchin wrote:
>
>> no, I think nil means it is not needed to make latex fragments  of
>> equations.
>>
>> John
>>
> OK, thanks.  So, back to my original question: how do I control the list
> of packages exported into a LaTeX document?
>
> Thanks,
> Roger
>