src/Tools/GraphBrowser/etc/settings

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Tools/GraphBrowser/etc/settings	Fri Jul 16 12:11:13 2021 +0200
@@ -0,0 +1,3 @@
+# -*- shell-script -*- :mode=shellscript:
+
+ISABELLE_TOOLS="$ISABELLE_TOOLS:$COMPONENT/lib/Tools"