The U stands for Unicode (the universal character set). The notation U +0000 is a way of making it explicit that the number is a Unicode reference.
Unicode 2009 is a thin space, traditionally considered a fifth of the nominal type size in points, defined by Unicode as either or a fifth or a sixth but in any case depending on the size given to this character by the creator of a particular font. There are several ways of entering any character in the Unicode range by its number, though they differ between Linux and Windows. Im afraid I don’t know anything about the latter. -- To unsubscribe e-mail to: users+unsubscr...@global.libreoffice.org Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted