As I have written in my first question, I use Windows 8.1.
Complying with Tom's advice, I uninstalled LibreOffice 4.3.5.2, and I got
back Styes and Formatting.
In order to be sure, I uninstalled 4.3.5.2 and installed 4.3.6.2. The
Styles and Formatting remained with 4.3.6.2.
I uninstalled 4.3.6.2 and installed 4.4.0.3. Then I lost the Styles and
Formatting. I uninstalled 4.4.0.3 and installed the lastest version,
4.4.1.2. The Styles and Formatting remained lost.
Then, I uninstalled 4.4.1.2 and installed 4.4.0.3. The Styles and
Formatting was not there.
Finally, I uninstalled 4.4.0.3, and installed 4.3.6.2. I got back the
Styles and Formatting.
So I will stick with 4.3.6.2.
There seems to be a problem with 4.4.0.3 and 4.4.1.2.
Thank you -- Brian, Tom, and Tony -- for your help.
Taang Zomi