On Sat, 19 Dec 2009, Joachim Osnabryg wrote:
The files with the filename-extension ?.lyx~? which LyX creates each time you begin a new document are obviously the ?LyX backups? for which one may assign a special directory where they go. Otherwise they are saved in the same directory as the .lyx file itself.
The tilde (~) is the standard symbol for a backup file in linux and other unices. It has no other function. Keep or delete as you choose. Rich