diff --git a/QRC4_2021_Selected Calculation View Modeling features/2021_QRC4/.hdiignore b/QRC4_2021_Selected Calculation View Modeling features/2021_QRC4/.hdiignore
new file mode 100644
index 0000000..4bf9447
--- /dev/null
+++ b/QRC4_2021_Selected Calculation View Modeling features/2021_QRC4/.hdiignore	
@@ -0,0 +1,5 @@
+**/*.md
+**/*.png
+**/*.jpg
+**/*.tar
+**/*.mp4