diff --git a/main.cu b/main.cu
index 92f2ab8..b476d6f 100644
--- a/main.cu
+++ b/main.cu
@@ -945,6 +945,11 @@ void advertise() {
 	std::cout << "|Source: https://git.stim.ee.uh.edu/Jack/flow3.git									  |" << std::endl;
 	std::cout << " =======================================================================================" << std::endl << std::endl;
 
+	std::cout << "Usage(keyboard): e -> open/close indexing" << std::endl;
+	std::cout << "                 m -> build synthetic connections(connection mode)/output augmented network as image stack (manufacture mode)" << std::endl;
+	std::cout << "                 s -> save network flow profiles in result folder as cvs files" << std::endl;
+	std::cout << "                 f -> open/close vector field visualization" << std::endl;
+
 	std::cout << args.str();
 }
 
--
libgit2 0.21.4