diff --git a/LINEMAGE_VSCODE_GUIDE.md b/LINEMAGE_VSCODE_GUIDE.md
index 47308b61..1e5f54f3 100644
--- a/LINEMAGE_VSCODE_GUIDE.md
+++ b/LINEMAGE_VSCODE_GUIDE.md
@@ -18,6 +18,8 @@ LineMage put together this list of links to learn about VSCode. We hope it's hel
 
 ## VSCode's Extension API
 
+VS Code exposes an API for building extensions. Knowing about the API is really important now because LineMage is mostly an extension right now, but it won't be as relevant when we touch the sourcecode more.
+
 - [Files you need in an extension](https://code.visualstudio.com/api/get-started/extension-anatomy).
 
 - [The `package.json` schema](https://code.visualstudio.com/api/references/extension-manifest).