ses: Customizing SES
3.6 Customizing SES
===================
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 analyzing formulas and printers. 
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!
Info Catalog
ses: Copy/cut/paste
ses: The Basics