Rich, LyX has a versioning system (by default).
It uses RCS, which used to be part of the XCode command line tools on the Mac (and can still be installed via homebrew) and an Ubuntu package by itself. There should be some Windoze package too, somewhere. There is also SVN support for document preparation but it's way more complicated :-)-O el On 2016-08-02 16:37, Rich Shepard wrote: [...] > When I'm working on a project and prior verions need to be retained > I create a subversion directory for them and commit changes when > they're made. > > Thanks, > > Rich >