diff --git a/src/lib.rs b/src/lib.rs
index 2dfc989..5930549 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,6 +3,7 @@
 
 pub mod flow;
 pub mod func;
+pub mod mode;
 pub mod mrds;
 pub mod rcore;
 pub mod rstd;
diff --git a/src/mode.rs b/src/mode.rs
new file mode 100644
index 0000000..e69de29