- Fix \Appendices command.

- Create float for code.
- Adjust fallback font weights.
- Redefine Center environment to eliminate extra space.
- Create TblrEnviron for code.

packages/Floats.sty

@@ -360,4 +360,27 @@
 			\\
 		\end{tblr}
 	\end{BigFloat}
-\group_end: }
+\group_end: }
+
+\NewDocumentEnvironment{CodeFloat}{
+	% #1: Label.
+	>{\TrimSpaces}m
+	% #2: Caption.
+	+m
+	% #3: Number of indentations.
+	m
+	% #4: Body text.
+	+b
+}{
+	\begin{figure}
+		\begin{MyCaption}{fig:#1}{#2}
+			\Centering
+			\begin{tblrCode}{
+				colspec		= {*{#3}{l}},
+				hline{1,Z}	= {0.6pt},
+			}
+				#4
+			\end{tblrCode}
+		\end{MyCaption}
+	\end{figure}
+}{}