But what happens if a file with such a parameter is opened by an older version (rc1, for instance)? I guess LyX will crash, no?
I would not consider rc1 because it is a temporary release. After 1.5.0, @para will always be accepted and will compile if a user's listings package supports para. Of course, to minimize the use of this feature, I will have to look through the parameters again, using the latest listings version. Bo
