diff --git a/lesson#21 - Aliased and Public Imports/main.d b/lesson#21 - Aliased and Public Imports/main.d
new file mode 100644
index 0000000..062f253
--- /dev/null
+++ b/lesson#21 - Aliased and Public Imports/main.d	
@@ -0,0 +1,7 @@
+// ****** aliased imports, public imports ******
+
+import io = std.stdio;
+
+void main() {
+    io.writeln("hello, world!\n");    
+}