Add command for generating unique secton labels.

Manual.cls

@@ -84,6 +84,7 @@
 % If the argument is not empty, only chapters that are listed are included.
 \NewDocumentCommand{\IncludeOnlyChapters}{m}{
 	\str_set:Nn \l_IncludeOnly_chapters_str {#1}
+	\str_remove_all:Nn \l_IncludeOnly_chapters_str {~}
 	\str_if_empty:NF \l_IncludeOnly_chapters_str {
 		\expanded{\noexpand\includeonly{\l_IncludeOnly_chapters_str}}
 	}

packages/Floats.sty

@@ -1,5 +1,4 @@
 \NeedsTeXFormat{LaTeX2e}
-%\ProvidesPackage{PrimeTeX/packages/Floats}[2025-09-03]
 \ProvidesExplPackage{PrimeTeX/packages/Floats}{2025-09-03}{1.0}{
 	Custom Float Environments.
 }

packages/Links.sty

@@ -1,5 +1,7 @@
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{PrimeTeX/packages/Links}[2025-08-17]
+\ProvidesExplPackage{PrimeTeX/packages/Links}{2025-08-17}{1.0}{
+	Hyperref configuration and custom label commands.
+}
 
 % Use Hyperref to automatically create links in the document
 \hypersetup{
@@ -29,3 +31,88 @@
 \RenewDocumentCommand{\subsectionautorefname}{}{Subsection}
 \RenewDocumentCommand{\subsubsectionautorefname}{}{Sub-subsection}
 \RenewDocumentCommand{\paragraphautorefname}{}{Paragraph}
+
+\bool_new:N \l_SectionLabel_success_bool
+
+\int_new:N \l_SectionLabel_slash_total_int
+\int_new:N \l_SectionLabel_slash_count_int
+\int_new:N \l_SectionLabel_char_count_int
+
+\str_new:N \l_SectionLabel_path_str
+\str_new:N \l_SectionLabel_part_str
+\str_new:N \l_SectionLabel_chapter_str
+\str_new:N \l_SectionLabel_section_str
+\str_new:N \l_SectionLabel_subsection_str
+\str_new:N \l_SectionLabel_subsubsection_str
+\str_new:N \l_SectionLabel_paragraph_str
+\str_new:N \l_SectionLabel_subparagraph_str
+% part:chapter:section:subsection:subsubsection:paragraph:subparagraph
+
+\NewDocumentCommand{\SectionLabel}{
+	% #1: Section Level. -1=Part, 0=Chapter, 1=Section, 2=Subsection,
+	% 3=Sub-subsection, 4=Paragraph, 5=Subparagraph
+	O{}
+	% Label for the current section.
+	m
+}{
+	\str_set:Nn \l_SectionLabel_level_str {#1}
+	\str_set:Nn \l_SectionLabel_label_str {#2}
+	\str_case:Nn \l_SectionLabel_level_str {
+		{} {\int_set:Nn \l_SectionLabel_slash_total_int {0}}
+		{-1} {\int_set:Nn \l_SectionLabel_slash_total_int {0}}
+		{0} {\int_set:Nn \l_SectionLabel_slash_total_int {1}}
+		{1} {\int_set:Nn \l_SectionLabel_slash_total_int {2}}
+		{2} {\int_set:Nn \l_SectionLabel_slash_total_int {3}}
+		{3} {\int_set:Nn \l_SectionLabel_slash_total_int {4}}
+		{4} {\int_set:Nn \l_SectionLabel_slash_total_int {5}}
+		{5} {\int_set:Nn \l_SectionLabel_slash_total_int {6}}
+		{part} {\int_set:Nn \l_SectionLabel_slash_total_int {0}}
+		{chapter} {\int_set:Nn \l_SectionLabel_slash_total_int {1}}
+		{section} {\int_set:Nn \l_SectionLabel_slash_total_int {2}}
+		{subsection} {\int_set:Nn \l_SectionLabel_slash_total_int {3}}
+		{subsubsection} {\int_set:Nn \l_SectionLabel_slash_total_int {4}}
+		{paragraph} {\int_set:Nn \l_SectionLabel_slash_total_int {5}}
+		{subparagraph} {\int_set:Nn \l_SectionLabel_slash_total_int {6}}
+	}
+	\__SectionLabel_make:
+	\expandafter\label\expandafter{\l_SectionLabel_path_str}
+}
+
+\NewDocumentCommand{\__SectionLabel_make:}{}{
+	\bool_set_false:N \l_SectionLabel_success_bool
+	\int_set:Nn \l_SectionLabel_char_count_int {0}
+	\int_set:Nn \l_SectionLabel_slash_count_int {0}
+
+	\str_map_variable:NNn \l_SectionLabel_path_str \l_tmpa_str {
+		%\message{{\l_tmpa_str}~slash~count:~\int_use:N \l_SectionLabel_slash_count_int\ ~slash~total:~\int_use:N \l_SectionLabel_slash_total_int^^J}
+		\int_compare:nNnT 
+			{\l_SectionLabel_slash_count_int} = 
+			{\l_SectionLabel_slash_total_int} {
+			\str_set:Ne \l_tmpb_str {\str_range:Nnn \l_SectionLabel_path_str {1} {\l_SectionLabel_char_count_int}}
+			\str_concat:NNN
+				\l_SectionLabel_path_str
+				\l_tmpb_str
+				\l_SectionLabel_label_str
+			\str_map_break:n {
+				\message{success}
+				\bool_set_true:N \l_SectionLabel_success_bool
+			}
+		}
+		\int_incr:N \l_SectionLabel_char_count_int
+		%\message{\l_tmpa_str}
+		\str_if_eq:VnT \l_tmpa_str {/} {
+			%\message{increment}
+			\int_incr:N \l_SectionLabel_slash_count_int
+		}
+	}
+
+	\bool_if:NF \l_SectionLabel_success_bool {
+		\int_do_until:nNnn 
+			{\l_SectionLabel_slash_count_int} =
+			{\l_SectionLabel_slash_total_int} {
+			\str_put_right:Nn \l_SectionLabel_path_str {/}
+			\int_incr:N \l_SectionLabel_slash_count_int
+		}
+		\str_put_right:Ne \l_SectionLabel_path_str {\l_SectionLabel_label_str}
+	}
+}

packages/Marginalia.sty

@@ -62,24 +62,24 @@
 }
 
 \NewDocumentCommand{\MarginFig}{
-	% #1: Options passed to \includegraphics.
+	% #1: Graphic file name.
-	O{}
-	% #2: Graphic file name.
 	m
+	% #2: Options passed to \includegraphics.
+	O{}
 	% #3: Label.
 	>{\TrimSpaces}m
+	% #4: Caption.
 	+m
 }{
-	% This strut ensures that the margin figure is counted as part of the
+	% This mbox ensures that the margin figure is counted as part of the
 	% following paragraph and is vertically aligned with it.
-	%\strut {\setlength{\parskip}{0pt} \par} \strut
 	\mbox{
 		\marginalia{
 			\MarginHyperSetup
 			\begin{MyCaption}[
 				format={\RaggedOutside\small\color{captionColor}}
 			]{fig:#3}{#4}
-				\Centering\includegraphics[keepaspectratio,#1]{#2}
+				\Centering\includegraphics[keepaspectratio,#2]{#1}
 			\end{MyCaption}
 		}
 	}