[LyX/master] Move Slides (SliTeX) section in Additional.lyx to Chapter 3 Document classes

[Pavel Sanda]

commit 0d50b62f73ec3fa1c33b3bc59dd180de14511f64
Author: John R Hudson <j.r.hudson at virginmedia.com>
Date:   Wed Dec 14 09:19:48 2022 +0000

    Move Slides (SliTeX) section in Additional.lyx to Chapter 3 Document classes

 lib/doc/Additional.lyx | 4166 ++++++++++++++++++++++++------------------------
 1 files changed, 2083 insertions(+), 2083 deletions(-)