org-latex-default-packages-alist

org-latex-default-packages-alist is a variable defined in `org.el'.
Its value is shown below.

Documentation:
Alist of default packages to be inserted in the header.

Change this only if one of the packages here causes an
incompatibility with another package you are using.

The packages in this list are needed by one part or another of
Org mode to function properly:

- inputenc, fontenc: for basic font and character selection
- fixltx2e: Important patches of LaTeX itself
- graphicx: for including images
- longtable: For multipage tables
- float, wrapfig: for figure placement
- rotating: for sideways figures and tables
- ulem: for underline and strike-through
- amsmath: for subscript and superscript and math environments
- textcomp, marvosymb, wasysym, amssymb: for various symbols used
for interpreting the entities in `org-entities'. You can skip
some of these packages if you don't use any of their symbols.
- hyperref: for cross references

Therefore you should not modify this variable unless you know
what you are doing. The one reason to change it anyway is that
you might be loading some other package that conflicts with one
of the default packages. Each element is either a cell or
a string.

A cell is of the format:

( "options" "package" SNIPPET-FLAG).

If SNIPPET-FLAG is non-nil, the package also needs to be included
when compiling LaTeX snippets into images for inclusion into
non-LaTeX output.

A string will be inserted as-is in the header of the document.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.

Value:

(("AUTO" "inputenc" t)
 ("T1" "fontenc" t)
 ("" "fixltx2e" nil)
 ("" "graphicx" t)
 ("" "longtable" nil)
 ("" "float" nil)
 ("" "wrapfig" nil)
 ("" "rotating" nil)
 ("normalem" "ulem" t)
 ("" "amsmath" t)
 ("" "textcomp" t)
 ("" "marvosym" t)
 ("" "wasysym" t)
 ("" "amssymb" t)
 ("" "hyperref" nil)
 "\\tolerance=1000")