diff --git a/src/backend/DIR_INFO b/src/backend/DIR_INFO
new file mode 100644
index 000000000..0c5dfc094
--- /dev/null
+++ b/src/backend/DIR_INFO
@@ -0,0 +1,2 @@
+data and caching backend
+
diff --git a/src/lib/DIR_INFO b/src/lib/DIR_INFO
new file mode 100644
index 000000000..1bc5bfed3
--- /dev/null
+++ b/src/lib/DIR_INFO
@@ -0,0 +1,2 @@
+cinelerra support library
+This dir contains the code for some tools and library code which will be used in many places
diff --git a/src/proc/DIR_INFO b/src/proc/DIR_INFO
new file mode 100644
index 000000000..e709101eb
--- /dev/null
+++ b/src/proc/DIR_INFO
@@ -0,0 +1 @@
+cinelerra processing core