diff --git a/doc/user_guide/en/make-qso.adoc b/doc/user_guide/en/make-qso.adoc
index 1f52ad075..fe6ca3bc1 100644
--- a/doc/user_guide/en/make-qso.adoc
+++ b/doc/user_guide/en/make-qso.adoc
@@ -62,10 +62,30 @@ When calling CQ you may also choose to check the box *Call 1st*.
 _WSJT-X_ will then respond automatically to the first decoded
 responder to your CQ.
 
-NOTE: When *Auto-Seq* is enabled the program de-activates *Enable
-Tx* at the end of each QSO.  We do not want _WSJT-X_ to make fully
-automated QSOs.
+NOTE: When *Auto-Seq* is enabled the program de-activates *Enable Tx*
+at the end of each QSO.  It is not intended that _WSJT-X_ should make
+fully automated QSOs.
 
+=== VHF Contest Mode
+
+A special *VHF Contest Mode* can be activated for FT8 and MSK144 modes
+by checking a box on the *Settings | Advanced* tab.  This mode is
+configured especially for VHF contests in which four-character grid
+locators are the required exchange.  When *Contest Mode* is active,
+the standard QSO sequence looks like this:
+
+ CQ K1ABC FN42
+                      K1ABC W9XYZ EN37
+ W9XYZ K1ABC R FN42
+                      K1ABC W9XYZ RRR
+ W9XYZ K1ABC 73
+
+In contest circumstances K1ABC might choose to call CQ again rather
+than sending 73 for his third transmission.
+
+IMPORTANT: Do not use VHF Contest Mode on an HF band or in conditions
+where worldwide propagation is available.  See
+<<PROTOCOL_OVERVIEW,Protocol Specifications>> for further details.
 
 [[COMP-CALL]] 
 === Compound Callsigns
@@ -174,10 +194,13 @@ as the following checklist:
 
 - Computer clock properly synchronized to UTC within ±1 s
 
+- Audio input and output devices configured for sample rate 48000 Hz,
+16 bits
+
 - Radio set to *USB* (upper sideband) mode
 
 - Radio filters centered and set to widest available passband (up to 5 kHz).
 
 TIP: Remember that in many circumstances FT8, JT4, JT9, JT65, and WSPR
 do not require high power. Under most HF propagation conditions, QRP
-is usually the norm.
+is the norm.
diff --git a/doc/user_guide/en/new_features.adoc b/doc/user_guide/en/new_features.adoc
index d737ebb13..8f413d73c 100644
--- a/doc/user_guide/en/new_features.adoc
+++ b/doc/user_guide/en/new_features.adoc
@@ -51,4 +51,5 @@ source-code repository can be found at {devsvn}, and most
 communication among the developers takes place on the email reflector
 {devmail}.  Bug reports and suggestions for new features, improvements
 to the _WSJT-X_ User Guide, etc., may also be sent to the
-{wsjt_yahoo_group} email reflector.
+{wsjt_yahoo_group} email reflector.  You must join the relevant group
+before posting to either email list.
diff --git a/doc/user_guide/en/tutorial-example3.adoc b/doc/user_guide/en/tutorial-example3.adoc
index 09875df2a..3639ccead 100644
--- a/doc/user_guide/en/tutorial-example3.adoc
+++ b/doc/user_guide/en/tutorial-example3.adoc
@@ -34,7 +34,8 @@ markers and both spinner controls will follow your selections.
 
 - Double-clicking at any frequency on the waterfall does all the
 things just described and also invokes the decoder in a small range
-around that frequency.
+around that frequency.  To decode a particular signal, double-click
+near the left edge of its waterfall trace.
 
 - Now double-click on any of the the lines of decoded text in the main
 window.  Unless you have *My Call* set to K1JT or KY7M on the
diff --git a/doc/user_guide/en/vhf-features.adoc b/doc/user_guide/en/vhf-features.adoc
index cfa077db1..4a595daaa 100644
--- a/doc/user_guide/en/vhf-features.adoc
+++ b/doc/user_guide/en/vhf-features.adoc
@@ -1,5 +1,8 @@
 _WSJT-X_ v1.8 suppports a number of features designed for use
-on the VHF and higher bands.  These features now include:
+on the VHF and higher bands.  These features include:
+
+- *FT8*, a mode designed for making fast QSOs with weak, fading
+signals
 
 - *JT4*, a mode particularly useful for EME on the microwave bands
 
@@ -279,21 +282,6 @@ messages at 50 or 70 MHz.  At these frequencies, most pings are long
 enough to support standard messages -- which have the advantage of
 being readable by anyone listening in.
 
-- A special *VHF Contest Mode* for FT8 and MSK144 can be activated by
-checking a box on the *Settings | Advanced* tab.  This mode is
-configured especially for VHF contests in which four-character grid
-locators are the required exchange.  When *Contest Mode* is active,
-the standard QSO sequence looks like this:
-
- CQ K1ABC FN42
-                      K1ABC W9XYZ EN37
- W9XYZ K1ABC R FN42
-                      K1ABC W9XYZ RRR
- W9XYZ K1ABC 73
-
-In contest circumstances K1ABC might choose to call CQ again rather
-than sending 73 for his third transmission.
-
 === Echo Mode
 
 *Echo* mode allows you to make sensitive measurements of your own