diff --git a/doc/DIR_INFO b/doc/DIR_INFO
new file mode 100644
index 000000000..9d0722d69
--- /dev/null
+++ b/doc/DIR_INFO
@@ -0,0 +1,2 @@
+documentation
+source for documentation and on some cases generated documentation in its own subdirs
diff --git a/doc/devel/uml/DIR_INFO b/doc/devel/uml/DIR_INFO
new file mode 100644
index 000000000..f8fec95f1
--- /dev/null
+++ b/doc/devel/uml/DIR_INFO
@@ -0,0 +1 @@
+autogenerated UML documentation
diff --git a/uml/DIR_INFO b/uml/DIR_INFO
index b98ecbf05..896a0163e 100644
--- a/uml/DIR_INFO
+++ b/uml/DIR_INFO
@@ -1 +1 @@
-uml model, created with bouml
+uml models, created with bouml
diff --git a/uml/cinelerra3/DIR_INFO b/uml/cinelerra3/DIR_INFO
new file mode 100644
index 000000000..c9bfb0e73
--- /dev/null
+++ b/uml/cinelerra3/DIR_INFO
@@ -0,0 +1 @@
+cinelerra3 UML model