Close all oben workbooks at once in Excel 2007

Hi, in Excel 2003 I am able to close all open workbooks at once. Click on x
button on one of workbooks while holding shift key does it. I remember
somebody posted how to do the same in Excel 2007, but forgot the trick. It
has something to do with general setup of Excel. Any idea? Thanks in advance.
Alojz

If you type:-close all workbooks- into the F 1 Help Facility you will see all

If you type:-

close all workbooks

- into the F 1 Help Facility you will see all of the options that are
available.

Please hit Yes if my comments have helped.

Hi, I did not find what I wanted in F1 help instructions.

Hi, I did not find what I wanted in F1 help instructions. I know I can add
icon for closing all open workbooks  to the ribbon with my favorites.
However, I would prefer to do it as simply as just clicking on x while
holding shift key and I know it works somehow, when I set up Excel in proper
way. But forgot how to set up Excel. In F1 help file I did not find such
instructions. Also, in Excel 2003 it was possible to use several others icons
in combination with shift key. Shift key in this case works as switch. For
instance, if I click on insert row icon while holding shift key, it actually
removes the row. I like this feature and would like to use the same feature
in Excel 2007. Then, I can save space in my favorite icons riboon for other
icons, I do not need to place twin icons in there, just place one of the
couple and via shift key to call the opposite action.