diff --git a/node_core/src/executions/mod.rs b/node_core/src/executions/mod.rs
new file mode 100644
index 0000000..b997b2b
--- /dev/null
+++ b/node_core/src/executions/mod.rs
@@ -0,0 +1,2 @@
+mod se;
+mod de;
diff --git a/node_core/src/lib.rs b/node_core/src/lib.rs
index 7f92203..ed9a835 100644
--- a/node_core/src/lib.rs
+++ b/node_core/src/lib.rs
@@ -1 +1 @@
-//ToDo: Add node_core module
+pub mod executions;