Archive for the ‘Linux’ Category

Second test post

February 12, 2009
```;; turn on and off gui. bars.
(defun my-all-bar-mode (&optional n)
"turn on or off scroll bar, tool bar, menu bar."
(interactive)
(if (eq n nil) (setq n (if menu-bar-mode -1 1)))
(if (fboundp 'scroll-bar-mode) (scroll-bar-mode n))
(if (fboundp 'tool-bar-mode) (tool-bar-mode n))
)```

Above should be code. how to highlighted code?

todo : view in opera.

Sum of $a^2$, $b^2$ and $c^2$ is

$a^2+b^2+c^2$

how to display mode latex.