diff --git a/doc/user_guide/en/acknowledgements.adoc b/doc/user_guide/en/acknowledgements.adoc
index e5e594791..d027b73ea 100644
--- a/doc/user_guide/en/acknowledgements.adoc
+++ b/doc/user_guide/en/acknowledgements.adoc
@@ -1,12 +1,13 @@
 // Status=review
 
 The _WSJT_ project was started by *K1JT* in 2001.  Since 2005 it has
-been an Open Source project, which now includes the programs _WSJT_,
+been an Open Source project, and it has included the programs _WSJT_,
 _MAP65_, _WSPR_, _WSJT-X_, and _WSPR-X_.  *G4WJS* (since 2013), *K9AN*
-(since 2015), and *IV3NWV* (since 2016) have made major contributions
-to _WSJT-X_.  Together with K1JT they now form the core development
-team.  *G4WJS* and *W9MDB* have made major contributions to _hamlib_,
-on which _WSJT-X_ depends for rig control.
+(since 2015), *IV3NWV* (since 2016), *KG4IYS* (since 2021), and
+*DG2YCB* (since 2021) have made major contributions to _WSJT-X_.
+Together with K1JT they now form the core development team.  *G4WJS*
+and *W9MDB* have made major contributions to the _hamlib_ library, on
+which _WSJT-X_ depends for rig control.
 
 All code in the _WSJT_ project is licensed under the GNU Public
 License (GPL).  Many users of these programs, too numerous to mention
diff --git a/doc/user_guide/en/controls-functions-left.adoc b/doc/user_guide/en/controls-functions-left.adoc
index ee90eaf82..72ff476c7 100644
--- a/doc/user_guide/en/controls-functions-left.adoc
+++ b/doc/user_guide/en/controls-functions-left.adoc
@@ -1,8 +1,10 @@
 // Status=edited
 
 Controls related to frequency selection, received audio level, the
-station being called, and date and time are found in the lower, left-hand section of the
-main window:
+station being called, and date and time are found in the lower,
+left-hand section of the main window.  Buttons are provided for making
+quick changes among he modes FT8, FT4, MSK144, Q65, and JT65, and
+for toggling FT8 Hound mode ON or OFF.
 
 //.Misc Controls Left
 image::misc-main-ui.png[align="center",alt="Misc Menu Items"]
diff --git a/doc/user_guide/en/controls-functions-main-window.adoc b/doc/user_guide/en/controls-functions-main-window.adoc
index 0027100d4..31017e86e 100644
--- a/doc/user_guide/en/controls-functions-main-window.adoc
+++ b/doc/user_guide/en/controls-functions-main-window.adoc
@@ -1,7 +1,7 @@
 // Status=edited
 
 The following controls appear just under the decoded text windows on
-the main screen:
+the main screen.  Some of them are visible only in certain modes.
 
 //.Main UI 
 image::main-ui-controls.png[align="center",width=650,alt="Main UI Controls"]
diff --git a/doc/user_guide/en/images/help-menu.png b/doc/user_guide/en/images/help-menu.png
index 3af2ec08a..b4de7378f 100644
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diff --git a/doc/user_guide/en/images/misc-controls-center.png b/doc/user_guide/en/images/misc-controls-center.png
index f2fdf64b9..7847797a6 100644
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diff --git a/doc/user_guide/en/images/misc-main-ui.png b/doc/user_guide/en/images/misc-main-ui.png
index 1889992a8..fac4e53d7 100644
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diff --git a/doc/user_guide/en/images/save-menu.png b/doc/user_guide/en/images/save-menu.png
index 6d1ff7a1a..2c04b8bdd 100644
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diff --git a/doc/user_guide/en/images/wide-graph-controls.png b/doc/user_guide/en/images/wide-graph-controls.png
index d776ee4c3..be1791a84 100644
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