diff --git a/Design:-Flow-Linter.md b/Design:-Flow-Linter.md
index 8bf1b4b..4b4122d 100644
--- a/Design:-Flow-Linter.md
+++ b/Design:-Flow-Linter.md
@@ -70,6 +70,7 @@ module.exports = {
   - [Babel](https://babeljs.io/): convert modern JavaScript (ES2015+) code to (traditional) JavaScript code that can be executed on various browsers.
 - [Language Server Protocol](https://microsoft.github.io/language-server-protocol/) defines the protocol used between an editor and a language server that provides language features like lint.  It may be alternative option to implement lint function as a language server embedded in a Node-RED server.
   - Language Server Protocol itself is aimed for line-oriented text programming languages.  It is not suitable for visual programming language like Node-RED.  If we adopt the LSP, We might incorporate only their 'Client-Server' architecture, and not incorporate their protocol or data model.
+  - If we adopt this architecture, the linter need not to generate code for server and browser.  But we have to estimate an overhead to send flow object from browser to server.
 
 ## Configuration
 Linter reads configuration files in following order: