confirm working on ubuntu
diff --git a/.Rproj.user/441ADA46/pcs/source-pane.pper b/.Rproj.user/441ADA46/pcs/source-pane.pper
new file mode 100644
index 0000000..9efb51b
--- /dev/null
+++ b/.Rproj.user/441ADA46/pcs/source-pane.pper
@@ -0,0 +1,3 @@
+{
+    "activeTab" : -1
+}
\ No newline at end of file