Updated description of "Build when Maven SNAPSHOT dependencies have been updated externally" build trigger.

Signed-off-by: Anders Hammar <[email protected]>

Author: andham

content/book-hudson.doc

@@ -3016,11 +3016,15 @@ Build when Maven dependencies have been updated by Maven 3 integration::
 Build when Maven SNAPSHOT dependencies have been updated externally::
 
   Activating this setting allows you to specify a schedule in cron
-  syntax to use for polling the local Maven repository for updated
-  SNAPSHOT dependencies. When selecting the Exclude internally
-  produced dependencies option the regular check will only cause a
-  build trigger firing when artifacts not built in a local Hudson job
-  are updated.
+  syntax to use for polling the Maven repository for updated
+  SNAPSHOT dependencies. The use case for this is to trigger a build
+  when an updated SNAPSHOT version of one of the project's Maven
+  dependencies has been deployed to the repository by a build outside
+  of the Hudson instance. The repository's URL is specified in the
+  global Hudson configuration. When selecting the Exclude internally
+  produced dependencies option, the check will only cause a build
+  trigger firing when artifacts not built by a project on the Hudson
+  instance are updated.
 
 [[section-configuring-post-build-actions]]
 ==== Configuring Post-build Actions