Both the native Org-mode tables (see Tables) and tables formatted with
the table.el package will be exported properly. For Org-mode tables,
the lines before the first horizontal separator line will become table header
lines. You can use the following lines somewhere before the table to assign
a caption and a label for cross references, and in the text you can refer to
the object with \ref{tab:basic-data}:
#+CAPTION: This is the caption for the next table (or link)
#+LABEL: tbl:basic-data
| ... | ...|
|-----|----|
Some backends (HTML, LaTeX, and DocBook) allow you to directly include
images into the exported document. Org does this, if a link to an image
files does not have a description part, for example [[./img/a.jpg]].
If you wish to define a caption for the image and maybe a label for internal
cross references, make sure that the link is on a line by itself and precede
it with #+CAPTION and #+LABEL as follows:
#+CAPTION: This is the caption for the next figure link (or table)
#+LABEL: fig:SED-HR4049
[[./img/a.jpg]]
You may also define additional attributes for the figure. As this is backend-specific, see the sections about the individual backends for more information.