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#### 12.10.5 Tables in LaTeX export

The LaTeX export back-end can pass several LaTeX attributes for table contents and layout. Besides specifying label and caption (see Images and tables), the other valid LaTeX attributes include:

:mode
The LaTeX export back-end wraps the table differently depending on the mode for accurate rendering of math symbols. Mode is either table, math, inline-math or verbatim. For math or inline-math mode, LaTeX export back-end wraps the table in a math environment, but every cell in it is exported as-is. The LaTeX export back-end determines the default mode from org-latex-default-table-mode. For , The LaTeX export back-end merges contiguous tables in the same mode into a single environment.
:environment
Set the default LaTeX table environment for the LaTeX export back-end to use when exporting Org tables. Common LaTeX table environments are provided by these packages: tabularx, longtable, array, tabu, and bmatrix. For packages, such as tabularx and tabu, or any newer replacements, include them in the org-latex-packages-alist variable so the LaTeX export back-end can insert the appropriate load package headers in the converted LaTeX file. Look in the docstring for the org-latex-packages-alist variable for configuring these packages for LaTeX snippet previews, if any.
:caption
Use #+CAPTION keyword to set a simple caption for a table (see Images and tables). For custom captions, use :caption attribute, which accepts raw LaTeX code. :caption value overrides #+CAPTION value.
:float
:placement
The table environments by default are not floats in LaTeX. To make them floating objects use :float with one of the following options: sideways, multicolumn, t, and nil. Note that sidewaystable has been deprecated since Org 8.3. LaTeX floats can also have additional layout :placement attributes. These are the usual [h t b p ! H] permissions specified in square brackets. Note that for :float sideways tables, the LaTeX export back-end ignores :placement attributes.
:align
:font
:width
The LaTeX export back-end uses these attributes for regular tables to set their alignments, fonts, and widths.
:spread
When :spread is non-nil, the LaTeX export back-end spreads or shrinks the table by the :width for tabu and longtabu environments. :spread has no effect if :width is not set.
:booktabs
:center
:rmlines
All three commands are toggles. :booktabs brings in modern typesetting enhancements to regular tables. The booktabs package has to be loaded through org-latex-packages-alist. :center is for centering the table. :rmlines removes all but the very first horizontal line made of ASCII characters from "table.el" tables only.
:math-prefix
:math-suffix
:math-arguments
The LaTeX export back-end inserts :math-prefix string value in a math environment before the table. The LaTeX export back-end inserts :math-suffix string value in a math environment after the table. The LaTeX export back-end inserts :math-arguments string value between the macro name and the table's contents. :math-arguments comes in use for matrix macros that require more than one argument, such as qbordermatrix.

LaTeX table attributes help formatting tables for a wide range of situations, such as matrix product or spanning multiple pages:

     #+ATTR_LATEX: :environment longtable :align l|lp{3cm}r|l
| ..... | ..... |
| ..... | ..... |

#+ATTR_LATEX: :mode math :environment bmatrix :math-suffix \times
| a | b |
| c | d |
#+ATTR_LATEX: :mode math :environment bmatrix
| 1 | 2 |
| 3 | 4 |


Set the caption with the LaTeX command \bicaption{HeadingA}{HeadingB}:

     #+ATTR_LATEX: :caption \bicaption{HeadingA}{HeadingB}
| ..... | ..... |
| ..... | ..... |