- Move packages to subfolder.

- Add Prime Controls graphics to this repo.
- Expand readme.

packages/CrossRef.sty

@@ -0,0 +1,50 @@
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{PrimeTeX/packages/CrossRef}[2025-07-09]
+
+% Cross references
+	\newcommand{\refPart}[2][Part~]{#1\ref{pt:#2}}
+	\newcommand{\refChapter}[2][Chapter~]{#1\ref{ch:#2}}
+	\newcommand{\refAppendix}[2][Appendix~]{#1\ref{ch:#2}}
+	\newcommand{\refSection}[2][Section~]{#1\ref{sec:#2}}
+	\newcommand{\refSubsection}[2][Subsection~]{#1\ref{subsec:#2}}
+	\newcommand{\refSubsubsection}[2][Sub-subsection~]{#1\ref{sssec:#2}}
+	\newcommand{\refParagraph}[2][Paragraph]{#1\ref{par:#2}}
+	\newcommand{\refSubparagraph}[2][Subparagraph~]{#1\ref{subpar:#2}}
+	\newcommand{\refTable}[2][Table~]{#1\ref{tbl:#2}}
+	\newcommand{\refFigure}[2][Figure~]{#1\ref{fig:#2}}
+	
+	\newcommand{\lblGeneral}[4][]{
+		\if\relax\detokenize{#1}\relax % Check if #1 is empty string.
+			#3{#2}\label{#4:#2}
+		\else
+			#3{#2}\label{#4:#1}
+		\fi
+	}
+	\newcommand{\lblPart}[2][]{
+		\lblGeneral[#1]{#2}{\part}{pt}
+	}
+	\newcommand{\lblChapter}[2][]{
+		\lblGeneral[#1]{#2}{\chapter}{ch}
+	}
+	\newcommand{\lblSection}[2][]{
+		\lblGeneral[#1]{#2}{\section}{sec}
+	}
+	\newcommand{\lblSubsection}[2][]{
+		\lblGeneral[#1]{#2}{\subsection}{subsec}
+	}
+	\newcommand{\lblSubsubsection}[2][]{
+		\lblGeneral[#1]{#2}{\subsubsection}{sssec}
+	}
+	\newcommand{\lblParagraph}[2][]{
+		\lblGeneral[#1]{#2}{\paragraph}{par}
+	}
+	\newcommand{\lblSubparagraph}[2][]{
+		\lblGeneral[#1]{#2}{\subparagraph}{subpar}
+	}
+	\newcommand{\lblTable}[2][]{
+		\lblGeneral[#1]{#2}{\caption}{tbl}
+	}
+	\newcommand{\lblFigure}[2][]{
+		\lblGeneral[#1]{#2}{\caption}{fig}
+	}
+%#endregion