By default, a newly-created spreadsheet has 1 row and 1 column. The column width is 7 and the default printer is ‘"%.7g"’. Each of these can be customized. Look in group “ses”.
After entering a cell value, point normally moves right to the next
cell. You can customize ses-after-entry-functions to move left or
up or down. For diagonal movement, select two functions from the
list.
ses-jump-cell-name-function is a customizable variable by
default set to the upcase function. This function is called
when you pass a cell name to the ses-jump command (j),
it changes the entered cell name to that where to jump. The default
setting upcase allows you to enter the cell name in low
case. Another use of ses-jump-cell-name-function could be some
internationalization to convert non latin characters into latin
equivalents to name the cell. Instead of a cell name, the function may
return cell coordinates in the form of a cons, for instance (0
. 0) for cell A1, (1 . 0) for cell A2, etc.
ses-jump-prefix-function is a customizable variable by default
set to the ses-jump-prefix function. This function is called
when you give a prefix argument to the ses-jump command
(j). It returns a cell name or cell coordinates corresponding to
the prefix argument. Cell coordinates are in the form of a cons, for
instance (1 . 0) for cell A2. The default setting
ses-jump-prefix will number cells left to right and then top
down, so assuming a 4x3 spreadsheet prefix argument 0 jumps to cell
A1, prefix argument 2 jumps to C1, prefix argument 3 jumps to A2, etc.
ses-mode-hook is a normal mode hook (list of functions to
execute when starting SES mode for a buffer).
The variable safe-functions is a list of possibly-unsafe
functions to be treated as safe when analyzing formulas and printers.
See Virus protection. Before customizing safe-functions,
think about how much you trust the person who’s suggesting this
change. The value t turns off all anti-virus protection. A
list-of-functions value might enable a “gee whiz” spreadsheet, but it
also creates trapdoors in your anti-virus armor. In order for virus
protection to work, you must always press n when presented with
a virus warning, unless you understand what the questionable code is
trying to do. Do not listen to those who tell you to customize
enable-local-eval—this variable is for people who don’t wear
safety belts!