Replace \bf with \bfseries.
The error was as follows:
! Class scrbook Error: undefined old font command `\bf'.
This change is consistent with
3cecd4d3.
After this change (and the previous commits), the ctests for
Additional.lyx pass again.
\change_inserted 564990737 1672138150
label=
+\change_deleted 274215730 1672889016
+
+\backslash
+bf
+\change_inserted 274215730 1672889016
+
\backslash
-bf{
+bfseries
+\change_inserted 564990737 1672138150
+{
\backslash
arabic{enumiii}}
\end_layout
\end_inset
label=
+\change_deleted 274215730 1672889037
+
\backslash
-bf{
+bf
+\change_inserted 274215730 1672889037
+
+\backslash
+bfseries
+\change_inserted 564990737 1672138150
+{
\backslash
arabic{enumiii}}
\begin_inset Newline newline
emph{}
\family default
makes the label emphasized and
+\change_deleted 274215730 1672889045
+
\family sans
\backslash
bf{}
+\change_inserted 274215730 1672889046
+
+\backslash
+bfseries{}
+\change_inserted 564990737 1672138150
+
\family default
makes it bold.
\end_layout