A few notes about managing your documents in OpenOffice and Libre Office to make exchanging documents with other people, particularly users of Microsoft Office, as painless as possible. This is not likely to be pain free anytime soon as incompatibilities can emerge. They can do even between people using different versions of Microsoft Office.
If you don't need your recipient to be able to edit the document, the best thing to do is to export it as a PDF file. That's P as in 'portable' - which is what you want:
If you want to exchange a document with a Microsoft Office user, you can save most documents as Word 2003:
Choose the correct file format