Merge bitcoin#9004: Clarify listenonion

3421e74 Clarify `listenonion` (unsystemizer)

Author: laanwj

doc/tor.md

@@ -126,10 +126,10 @@ This means that if Tor is running (and proper authentication has been configured
 Dash Core automatically creates a hidden service to listen on. This will positively 
 affect the number of available .onion nodes.
 
-This new feature is enabled by default if Dash Core is listening, and
-a connection to Tor can be made. It can be configured with the `-listenonion`,
-`-torcontrol` and `-torpassword` settings. To show verbose debugging
-information, pass `-debug=tor`.
+This new feature is enabled by default if Dash Core is listening (`-listen`), and
+requires a Tor connection to work. It can be explicitly disabled with `-listenonion=0`
+and, if not disabled, configured using the `-torcontrol` and `-torpassword` settings.
+To show verbose debugging information, pass `-debug=tor`.
 
 Connecting to Tor's control socket API requires one of two authentication methods to be 
 configured. For cookie authentication the user running dashd must have write access