diff --git a/doc/POST_INSTALL.md b/doc/POST_INSTALL.md
new file mode 100644
index 0000000..0e5977b
--- /dev/null
+++ b/doc/POST_INSTALL.md
@@ -0,0 +1,4 @@
+Congratulation, Open Search is installed!
+
+You may try its API right now. Try this command:
+curl http://localhost:**PORT**
diff --git a/doc/PRE_INSTALL.md b/doc/PRE_INSTALL.md
index ef521fb..08cceb6 100644
--- a/doc/PRE_INSTALL.md
+++ b/doc/PRE_INSTALL.md
@@ -1,4 +1,4 @@
-### Limitations
+LIMITATIONS
 
 - Currently the security is disabled
 - Therefore, the package is configured to remain not public for now (i.e. not accessible through the web, the apps depending on it should be installed on the same server)