From 65724394bdb933254ddfe253945bbe9898d4c2aa Mon Sep 17 00:00:00 2001
From: dannyrb <danny.ri.brown@gmail.com>
Date: Fri, 10 May 2019 14:04:57 -0400
Subject: [PATCH] Blurb regarding current state of tool management

---
 docs/latest/advanced/custom-tools.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/docs/latest/advanced/custom-tools.md b/docs/latest/advanced/custom-tools.md
index 399b04c8b..bed6c344f 100644
--- a/docs/latest/advanced/custom-tools.md
+++ b/docs/latest/advanced/custom-tools.md
@@ -1 +1,8 @@
 # Tool Management
+
+This is not yet exposed in an easy/convenient way. Most tools are currently
+added by creating new Viewport, Toolbar, and SOPInstanceHandler extension
+modules. You can read more about that approach in [extensions](./extensions.md).
+
+In the near future, we intend to improve the extensibility of tools for existing
+Viewports (like our Cornerstone.js and VTK.js viewports).