diff --git a/Dev.md b/Dev.md
index 610ac35..f43121b 100644
--- a/Dev.md
+++ b/Dev.md
@@ -10,7 +10,7 @@ Views into the process of Tahoe hackery.
 
  * The Buildbot page (linked at the top of each page) shows current build and test results.
 
- * [The Doc page](Doc) contains extensive documentation, which is very useful guide for hacking.
+ * [The Doc page](Doc) contains extensive documentation, which is very useful guide for hacking.  See especially the webapi.txt document, which shows how to control a Tahoe node programmatically.
 
  * [The tickets](http://allmydata.org/trac/tahoe/query?status=new&status=assigned&status=reopened&groupdesc=1&group=priority&component=code&milestone=0.5.0&order=priority) to be fixed for the v0.5 release.