How do I create a multi-level numbered list with OpenOffice Writer?

"Start the list as usual and select from Formats->Bullet and Numbering->Outline an appropriate style (I often use the all-numeric 1/1.1/1.1.1 style but there is a 1./1./1./ that should provide the effect you are looking for).

At the end of the first point (default: 1.) press enter
'2.' will be displayed. If you now press tab this will change to '1.1'
Complete this point, press enter, '1.2' will be displayed and so on.

When the last sub-1 point is done, press enter. Say '1.7' is displayed, press shifttab and this will change to '2'.

After a bit it all gets obvious and easy. It works the same way for any of the styles and for multiple levels."