added notice about utf-8 encoding

.latexmkrc

@@ -16,10 +16,10 @@
 
 # Move all axuiliary files to a separate directory, so they do not clutter up the project directory
 $emulate_aux = 1;
-$aux_dir = ".tmp";
+$aux_dir = "build";
 
 # Move the compiled files (and synctex) to a separate directory
-$out_dir = '.build';
+$out_dir = 'build';
 
 # command to compile and run
 $pdflatex = 'pdflatex %O -interaction=nonstopmode -shell-escape %S';
@@ -45,6 +45,14 @@ $pdf_mode = 1;
 # Keep auxiliary files
 $clean_ext = " ";
 
+# =====================================================================
+# Custom dependency and function for nomencl package
+# See: https://www.overleaf.com/learn/how-to/How_does_Overleaf_compile_my_project%3F
+
+add_cus_dep("nlo", "nls", 0, "nlo2nls");
+sub nlo2nls {
+        system("makeindex $_[0].nlo -s nomencl.ist -o $_[0].nls -t $_[0].nlg");
+}
 # =====================================================================
 # custom dependency handling for glossaries
 

main.tex

@@ -26,6 +26,8 @@
 \usepackage{tikz}                   % painting
 \usepackage{tikz-imagelabels}       % overlay labels for images
 \usepackage{cite}                   % citation for bibliography
+\usepackage{amssymb}                % provides enhancements for mathematical formulas
+% \usepackage[utf8]{inputenc}         % load files via \input as UTF-8, enabled by default since 2018
 
 \makeindex
 \makenomenclature

nomencl.tex

@@ -1 +1,16 @@
-\nomenclature{\(c\)}{Speed of light in a vacuum}
+% For more verbose examples see: https://www.overleaf.com/learn/latex/Nomenclatures
+
+% Create groups for different nomenclature sections
+\renewcommand\nomgroup[1]{%
+  \item[\bfseries
+  \ifstrequal{#1}{P}{Physikalische Konstanten}{
+  \ifstrequal{#1}{E}{Chemische Elemente}{
+  \ifstrequal{#1}{Z}{Zahlenreihen}{
+  \ifstrequal{#1}{O}{Andere Symbole}}}}
+]}
+
+% Quick examples:
+% \nomenclature[P]{\(c\)}{Speed of light in a vacuum}
+% \nomenclature[Z]{\(\mathbb{C}\)}{Complex numbers}
+%              ^^^    ^^^^^^^^^^   ^^^^^^^^^^^^^^^
+%            Gruppe  Darstellung    Beschreibung