diff --git a/doc/user_guide/en/controls-functions-center.adoc b/doc/user_guide/en/controls-functions-center.adoc
index a640809d6..4d88415a2 100644
--- a/doc/user_guide/en/controls-functions-center.adoc
+++ b/doc/user_guide/en/controls-functions-center.adoc
@@ -28,7 +28,7 @@ decoded text or a signal in the waterfall.
 
 * For modes lacking a multi-decode feature, or when *Enable
 VHF/UHF/Microwave features* has been checked on the *Settings ->
-General* tab, the *F Tol* control sets a frequency toilerance range
+General* tab, the *F Tol* control sets a frequency tolerance range
 over which decoding will be attempted, centered on the Rx frequency.
 
 * The *Report* control lets you change a signal report that has been
diff --git a/doc/user_guide/en/controls-functions-messages.adoc b/doc/user_guide/en/controls-functions-messages.adoc
index 6a130d70c..f7f23870c 100644
--- a/doc/user_guide/en/controls-functions-messages.adoc
+++ b/doc/user_guide/en/controls-functions-messages.adoc
@@ -30,7 +30,7 @@ Pressing *Enter* on a modified message #5 automatically adds that
 message to the stored macros.
 
 * In some circumstances it may be desirable to make your QSOs as
-shiort as possible.  To configure the program to start contacts with
+short as possible.  To configure the program to start contacts with
 message #2, disable message #1 by double-clicking on its round
 radio-button or rectangular *Tx 1* button.  Similarly, to send RR73
 rather than RRR for message #4, double-click on one of its buttons.
diff --git a/doc/user_guide/en/controls-functions-status-bar.adoc b/doc/user_guide/en/controls-functions-status-bar.adoc
index a38ff54fd..cf6c2a4ab 100644
--- a/doc/user_guide/en/controls-functions-status-bar.adoc
+++ b/doc/user_guide/en/controls-functions-status-bar.adoc
@@ -17,7 +17,7 @@ displayed exactly as it will be decoded by receiving stations.  The
 second label (as shown above) will be absent if you are using the
 *Default* setting on the *Configurations* menu.  A progress bar shows
 the elapsed fraction of a Tx or Rx sequence.  Finally, if the Watchdog
-(WD) timer was enabled on the *settings | General* tab, a label in the
+(WD) timer was enabled on the *Settings | General* tab, a label in the
 lower right-hand corner displays the number of minutes remaining
 before timeout.
 
diff --git a/doc/user_guide/en/faq.adoc b/doc/user_guide/en/faq.adoc
index 27751a493..2152c3c74 100644
--- a/doc/user_guide/en/faq.adoc
+++ b/doc/user_guide/en/faq.adoc
@@ -53,7 +53,7 @@ You need to install suitable _OpenSSL_ libraries - see <<OPENSSL,Instructions to
 
 I occasionally get Rig Control Errors if I adjust my Icom rig's VFO. What's wrong?::
 
-By default most Icom transceivers have *CI-V Tranceive Mode" enabled,
+By default, most Icom transceivers have *CI-V Tranceive Mode" enabled,
 this will cause unsolicited CAT traffic from the rig that disrupts CAT
 control by a PC. Disable this option in the rig's menu.
 
diff --git a/doc/user_guide/en/images/file-menu.png b/doc/user_guide/en/images/file-menu.png
index 4adcedc3b..c6925753e 100644
Binary files a/doc/user_guide/en/images/file-menu.png and b/doc/user_guide/en/images/file-menu.png differ
diff --git a/doc/user_guide/en/install-windows.adoc b/doc/user_guide/en/install-windows.adoc
index a6200a9ed..495e04a16 100644
--- a/doc/user_guide/en/install-windows.adoc
+++ b/doc/user_guide/en/install-windows.adoc
@@ -70,7 +70,7 @@ TIP: If you cannot install the _OpenSSL_ libraries or do not have an
   To ensure that this will be so when running under recent versions of
   Windows, open the system's *Sound* control panel and select in turn
   the *Recording* and *Playback* tabs. Click on *Properties*, then
-  *Advanced*, and select *16 bit, 48000 Hz (DVD Quality)*. Switch of
+  *Advanced*, and select *16 bit, 48000 Hz (DVD Quality)*. Switch off
   all audio enhancement features for these devices.
 
 * You can uninstall _WSJT-X_ by clicking its *Uninstall* link in the
diff --git a/doc/user_guide/en/make-qso.adoc b/doc/user_guide/en/make-qso.adoc
index bc4c7ac51..4e6b65db3 100644
--- a/doc/user_guide/en/make-qso.adoc
+++ b/doc/user_guide/en/make-qso.adoc
@@ -20,7 +20,7 @@ signal report, R plus a signal report, or the final acknowledgements
 RRR or 73.  These messages are compressed and encoded in a highly
 efficient and reliable way.  In uncompressed form (as displayed
 on-screen) they may contain as many as 22 characters.  Some operators
-prefer ro send RR73 rather than RRR.  This is workable because RR73 is
+prefer to send RR73 rather than RRR.  This is workable because RR73 is
 encoded as a valid grid locator, one unlikely ever to be occupied by
 an amateur station.
 
@@ -81,7 +81,7 @@ fully automated QSOs.
 
 === Contest Messages
 
-The new FT8 and MSK144 protocols support special messages optimized
+The new FT4, FT8, and MSK144 protocols support special messages optimized
 for *NA VHF* and *EU VHF* contests. FT8 also supports messages for
 *ARRL Field Day* and the *ARRL RTTY Roundup*.  The decoders recognize
 and decode these messages at any time.  Configure the program to
diff --git a/doc/user_guide/en/measurement_tools.adoc b/doc/user_guide/en/measurement_tools.adoc
index 00c5e2d34..04e2d9109 100644
--- a/doc/user_guide/en/measurement_tools.adoc
+++ b/doc/user_guide/en/measurement_tools.adoc
@@ -36,7 +36,7 @@ in other parts of the world.
 frequencies, check *Execute frequency calibration cycle* on the
 *Tools* menu.  _WSJT-X_ will spend 30 seconds at each
 frequency. Initially no measurement data is saved to the `fmt.all`
-file although it is displayed on screen, this allows you to check you
+file although it is displayed on screen, this allows you to check your
 current calibration parameters.
 
 - During the calibration procedure, the radio's USB dial frequency is
@@ -44,11 +44,11 @@ offset 1500 Hz below each *FreqCal* entry in the default frequencies
 list.  As shown in the screen shot below, detected signal carriers
 therefore appear at about 1500 Hz in the _WSJT-X_ waterfall.
 
-- To start a measurement session check the *Measure* option and let
+- To start a measurement session, check the *Measure* option and let
 the calibration cycle run for at least one complete sequence. Note
 that, while measuring, any existing calibration parameters are
 automatically disabled so you may have to increase the *FTol* range if
-your rig is off freqeuncy by more than a few Hertz in order to capture
+your rig is off frequency by more than a few Hertz in order to capture
 valid measurements.
 
 image::FreqCal.png[align="left",alt="FreqCal"]
diff --git a/doc/user_guide/en/new_features.adoc b/doc/user_guide/en/new_features.adoc
index d940c1cc3..2b8efe4c4 100644
--- a/doc/user_guide/en/new_features.adoc
+++ b/doc/user_guide/en/new_features.adoc
@@ -17,7 +17,7 @@ In this manual the following icons call attention to particular types
 of information:
 
 NOTE: *Notes* containing information that may be of interest to
-particuar classes of users.
+particular classes of users.
 
 TIP: *Tips* on program features or capabilities that might otherwise be
 overlooked.
diff --git a/doc/user_guide/en/protocols.adoc b/doc/user_guide/en/protocols.adoc
index e0d4145e3..00cf01a1d 100644
--- a/doc/user_guide/en/protocols.adoc
+++ b/doc/user_guide/en/protocols.adoc
@@ -52,9 +52,10 @@ were the callsigns `E9AA` through `E9ZZ`.  Upon reception they are
 converted back to the form `CQ AA` through `CQ ZZ`, for display to the
 user.
 
-The new FT8 and MSK144 protocols use a different lossless compression
-algorithm with features to generate and recognize the special messages
-used for contesting and the like.  (More to come, here ...)
+The new FT4, FT8, and MSK144 protocols use a different lossless
+compression algorithm with features to generate and recognize the
+special messages used for contesting and the like.  (More to come,
+here ...)
 
 To be useful on channels with low signal-to-noise ratio, this kind of
 lossless message compression requires use of a strong forward error
@@ -224,7 +225,7 @@ the sync bit.
 [[SLOW_SUMMARY]]
 ==== Summary
 
-Table 2 provides a brief summary parameters for the slow modes in
+Table 7 provides a brief summary parameters for the slow modes in
 _WSJT-X_.  Parameters K and r specify the constraint length and rate
 of the convolutional codes; n and k specify the sizes of the
 (equivalent) block codes; Q is the alphabet size for the
@@ -250,7 +251,7 @@ which the probability of decoding is 50% or higher.
 
 Submodes of JT4, JT9, JT65, and QRA64 offer wider tone spacings for
 circumstances that may require them, such significant Doppler spread.
-Table 3 summarizes the tone spacings, bandwidths, and approximate
+Table 8 summarizes the tone spacings, bandwidths, and approximate
 threshold sensitivities of the various submodes when spreading is
 comparable to tone spacing.
 
@@ -335,7 +336,7 @@ The JT9 slow modes all use keying rate 12000/6912 = 1.736 baud.  By contrast, wi
 the *Fast* setting submodes JT9E-H adjust the keying rate to match the
 increased tone spacings.  Message durations are therefore much
 shorter, and they are sent repeatedly throughout each Tx sequence.
-For details see Table 4, below.
+For details see Table 9, below.
 
 ==== MSK144
 
diff --git a/doc/user_guide/en/settings-advanced.adoc b/doc/user_guide/en/settings-advanced.adoc
index 94b1c5f71..9fc9bbc9b 100644
--- a/doc/user_guide/en/settings-advanced.adoc
+++ b/doc/user_guide/en/settings-advanced.adoc
@@ -38,7 +38,7 @@ with twice or four times the normal tone spacing.  This feature is
 intended for use with specialized LF/MF transmitters that divide
 generated frequencies by 2 or 4 as part of the transmission process.
 
-_Special Operating Activity: Generation of FT8 and MSk144 messages_
+_Special Operating Activity: Generation of FT8 and MSK144 messages_
 
 - Check this box and select the type of activity to enable
 auto-generation of special message formats for contesting and
diff --git a/doc/user_guide/en/settings-colors.adoc b/doc/user_guide/en/settings-colors.adoc
index a33230f9a..fd47c2988 100644
--- a/doc/user_guide/en/settings-colors.adoc
+++ b/doc/user_guide/en/settings-colors.adoc
@@ -37,11 +37,11 @@ TIP: The _WSJT-X_ ADIF file records must contain the "CALL" field.
 
 Stations who are known to have uploaded their logs to the ARRL LoTW
 QSL matching service can be highlighted. The data used to determine
-this is available on line.
+this is available online.
 
 * *Fetch Now* will download a fresh dataset from the *Users CSV file
    URL*. The LoTW team normally update this data weekly.
 
-* Adjust *Age of of last upload less than* to set the period within
+* Adjust *Age of last upload less than* to set the period within
   which a station must have uploaded their log to LoTW to trigger
   highlighting.
diff --git a/doc/user_guide/en/settings-frequencies.adoc b/doc/user_guide/en/settings-frequencies.adoc
index 5cdf26dbd..53d41c45e 100644
--- a/doc/user_guide/en/settings-frequencies.adoc
+++ b/doc/user_guide/en/settings-frequencies.adoc
@@ -3,7 +3,7 @@
 [[FIG_BAND_SETTINGS]]
 image::settings-frequencies.png[align="center",alt="Frequency Screen"]
 
-_Working Frequencies_: By default the *Working Frequencies* table
+_Working Frequencies_: By default, the *Working Frequencies* table
 contains a list of frequencies conventionally used for modes FT8, JT4,
 JT9, JT65, MSK144, WSPR, and Echo.  Conventions may change with time
 or by user preference; you can modify the frequency table as desired.
diff --git a/doc/user_guide/en/settings-radio.adoc b/doc/user_guide/en/settings-radio.adoc
index 0f0ff27fe..720ec0f06 100644
--- a/doc/user_guide/en/settings-radio.adoc
+++ b/doc/user_guide/en/settings-radio.adoc
@@ -42,7 +42,7 @@ NOTE: _Omni-Rig_ is available only under Windows.
 
 NOTE: A special value of *USB* is available for custom USB devices
       like those used by some SDR kits. This is not the same a virtual
-      serial port provided by USB connected transcivers and CAT
+      serial port provided by USB connected transceivers and CAT
       interfaces, for those use the COM or serial port name that
       refers to them.
 
@@ -69,7 +69,7 @@ NOTE: CAT interfaces that require handshaking will be non-responsive
 
 NOTE: When using a proxy application for rig control, *CAT* is usually
       the correct option for _PTT Method_ assuming the proxy
-      application is capable of keying your transceiver idependently.
+      application is capable of keying your transceiver independently.
 
 * _Transmit Audio Source_: some radios permit you to choose the
   connector that will accept Tx audio.  If this choice is enabled,
diff --git a/doc/user_guide/en/tutorial-example1.adoc b/doc/user_guide/en/tutorial-example1.adoc
index ff7ad4d55..f2a2f4d64 100644
--- a/doc/user_guide/en/tutorial-example1.adoc
+++ b/doc/user_guide/en/tutorial-example1.adoc
@@ -28,7 +28,7 @@ When this file was recorded KF4RWA was finishing a QSO with K1JT.
 Since the green marker was placed at his audio frequency, 1224 Hz, his
 message `K1JT KF4RWA 73` is decoded first and appears in the *Rx
 Frequency* window. The *Band Activity* window shows this message plus
-all decodes at other frequencies.  By default lines containing `CQ`
+all decodes at other frequencies.  By default, lines containing `CQ`
 are highlighted in green, and lines with *My Call* (in this case K1JT)
 in red.
 
diff --git a/doc/user_guide/en/tutorial-example3.adoc b/doc/user_guide/en/tutorial-example3.adoc
index e8e37c715..704aa2170 100644
--- a/doc/user_guide/en/tutorial-example3.adoc
+++ b/doc/user_guide/en/tutorial-example3.adoc
@@ -39,7 +39,7 @@ things just described and also invokes the decoder in a small range
 around the Rx 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 Band
+- Now double-click on any of the lines of decoded text in the Band
 Activity window.  Any line will show the same behavior, setting
 Rx frequency to that of the selected message and leaving Tx frequency
 unchanged.  To change both Rx and Tx frequencies, hold *Ctrl* down
diff --git a/doc/user_guide/en/tutorial-example4.adoc b/doc/user_guide/en/tutorial-example4.adoc
index 2693a8071..8659088c3 100644
--- a/doc/user_guide/en/tutorial-example4.adoc
+++ b/doc/user_guide/en/tutorial-example4.adoc
@@ -37,7 +37,7 @@ follow your frequency selections.
 - Do the same thing with the *Ctrl* key held down.  Now the both colored 
 markers and both spinner controls will follow your selections.
 
-- Now double-click on any of the the lines of decoded text in the Band
+- Now double-click on any of the lines of decoded text in the Band
 Activity window.  Any line will show similar behavior, setting
 Rx frequency to that of the selected message and leaving Tx frequency
 unchanged.  To change both Rx and Tx frequencies, hold *Ctrl* down
diff --git a/doc/user_guide/en/vhf-features.adoc b/doc/user_guide/en/vhf-features.adoc
index 41aade4c0..b16842112 100644
--- a/doc/user_guide/en/vhf-features.adoc
+++ b/doc/user_guide/en/vhf-features.adoc
@@ -1,4 +1,4 @@
-_WSJT-X_ v{VERSION_MAJOR}.{VERSION_MINOR} suppports a number of
+_WSJT-X_ v{VERSION_MAJOR}.{VERSION_MINOR} supports a number of
 features designed for use on the VHF and higher bands.  These features
 include:
 
@@ -111,7 +111,7 @@ retune their receiver as the Doppler changes.  Sked frequency in this
 case is set to that announced by your QSO partner.
 
 - Select *Call DX* after tuning the radio manually to find a station,
-with the Doppler mode initally set to *None*. You may be tuning the band
+with the Doppler mode initially set to *None*. You may be tuning the band
 looking for random stations, or to a frequency where a station has been
 seen on an SDR display.  It is usually necessary to hold down the Ctrl key
 while tuning the radio. From the moment *Call DX* is pressed, your 
@@ -221,7 +221,7 @@ to indicate to the other station that you are ready to receive messages.
 
 TIP: QRA64 is different from JT65 in that the decoder attempts to find
 and decode only a single signal in the receiver passband.  If many
-signals are present you may be able to decode them by double-clicking
+signals are present, you may be able to decode them by double-clicking
 on the lowest tone of each one in the waterfall.
 
 TIP: G3WDG has prepared a more detailed tutorial on using {QRA64_EME}. 
@@ -236,11 +236,11 @@ error-correction facility.
 
 === MSK144
 
-Meteor-scatter QSOs can be made any time on the VHF bands at distances
+Meteor scatter QSOs can be made any time on the VHF bands at distances
 up to about 2100 km (1300 miles).  Completing a QSO takes longer in
 the evening than in the morning, longer at higher frequencies, and
 longer at distances close to the upper limit.  But with patience, 100
-Watts or more, and a single yagi it can usually be done.  The
+W or more, and a single yagi it can usually be done.  The
 following screen shot shows two 15-second reception intervals
 containing MSK144 signals from three different stations.
 
@@ -271,7 +271,7 @@ image::Rx_pct_MSK144.png[align="center",alt="MSK144 Percent CPU"]
 
 - The displayed number (here 17%) indicates the fraction of available
 time being used for execution of the MSK144 real-time decoder.  If
-this number is well below 100% you may increase the decoding depth
+this number is well below 100%, you may increase the decoding depth
 from *Fast* to *Normal* or *Deep*, and increase *F Tol* from 100 to
 200 Hz.