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-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 analysing
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!