How to print an A5 4 or 8 page folded booklet

Produce an A5 booklet using A4 paper.
Produce the document in A4 size but remember it will be reduced to A5 size in the printing.
Font on screen > font in brochure
17 > 12 pt
16 > 11.3 pt
14 > 10 pt
12 > 8.5 pt

OpenOffice.org setting
Printer setting = Brochure

Printer setting
Duplex
A4 landscape