diff --git a/doc/environment/groupthm/.latexmkrc b/doc/environment/groupthm/.latexmkrc
new file mode 100644
index 0000000..4c81cd6
--- /dev/null
+++ b/doc/environment/groupthm/.latexmkrc
@@ -0,0 +1,4 @@
+$makeindex = "makeindex -s gind.ist %O -o %D %S";
+$clean_ext .= ' glo';
+$clean_ext .= ' hd';
+$clean_ext .= ' ins';
diff --git a/doc/environment/groupthm/Makefile b/doc/environment/groupthm/Makefile
new file mode 100644
index 0000000..e174370
--- /dev/null
+++ b/doc/environment/groupthm/Makefile
@@ -0,0 +1,8 @@
+doc:
+	latexmk
+
+full:
+	latexmk -gg
+
+clean:
+	latexmk -C
diff --git a/doc/environment/groupthm/groupthm.tex b/doc/environment/groupthm/groupthm.tex
new file mode 100644
index 0000000..1a35dc6
--- /dev/null
+++ b/doc/environment/groupthm/groupthm.tex
@@ -0,0 +1,5 @@
+\documentclass[full]{l3doc}
+\usepackage{mkessler-todo}
+\begin{document}
+\DocInput{../../../src/environments/groupthm/groupthm.dtx}
+\end{document}