diff --git a/.gitattributes b/.gitattributes
index b1e1bbf70..2712bf16d 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -3,3 +3,4 @@
 /lib/fsk4hf	export-ignore
 /lib/fsk4hf	export-ignore
 /robots		export-ignore
+/plots		export-ignore
diff --git a/Configuration.ui b/Configuration.ui
index 53091a905..e86fe984a 100644
--- a/Configuration.ui
+++ b/Configuration.ui
@@ -951,7 +951,7 @@ a few, particularly some Kenwood rigs, require it).</string>
           <item row="0" column="1">
            <widget class="QRadioButton" name="PTT_DTR_radio_button">
             <property name="toolTip">
-             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Use the RS-232 DTR control line to toggle your radio's PTT, requires hardware to inteface the line.&lt;/p&gt;&lt;p&gt;Some commercial interface units also use this method.&lt;/p&gt;&lt;p&gt;The DTR control line of the CAT serial port may be used for this or a DTR control line on a different serial port may be used.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Use the RS-232 DTR control line to toggle your radio's PTT, requires hardware to interface the line.&lt;/p&gt;&lt;p&gt;Some commercial interface units also use this method.&lt;/p&gt;&lt;p&gt;The DTR control line of the CAT serial port may be used for this or a DTR control line on a different serial port may be used.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
             </property>
             <property name="text">
              <string>&amp;DTR</string>
@@ -982,7 +982,7 @@ other hardware interface for PTT.</string>
           <item row="1" column="1">
            <widget class="QRadioButton" name="PTT_RTS_radio_button">
             <property name="toolTip">
-             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Use the RS-232 RTS control line to toggle your radio's PTT, requires hardware to inteface the line.&lt;/p&gt;&lt;p&gt;Some commercial interface units also use this method.&lt;/p&gt;&lt;p&gt;The RTS control line of the CAT serial port may be used for this or a RTS control line on a different serial port may be used. Note that this option is not available on the CAT serial port when hardware flow control is used.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Use the RS-232 RTS control line to toggle your radio's PTT, requires hardware to interface the line.&lt;/p&gt;&lt;p&gt;Some commercial interface units also use this method.&lt;/p&gt;&lt;p&gt;The RTS control line of the CAT serial port may be used for this or a RTS control line on a different serial port may be used. Note that this option is not available on the CAT serial port when hardware flow control is used.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
             </property>
             <property name="text">
              <string>R&amp;TS</string>
@@ -1080,7 +1080,7 @@ or bandwidth is selected).</string>
           <item row="0" column="2">
            <widget class="QRadioButton" name="mode_data_radio_button">
             <property name="toolTip">
-             <string>If this is availabe then it is usually the correct mode for this program.</string>
+             <string>If this is available then it is usually the correct mode for this program.</string>
             </property>
             <property name="text">
              <string>Data/P&amp;kt</string>
diff --git a/translations/wsjtx_en_GB.ts b/translations/wsjtx_en_GB.ts
index 2e0570962..261d4486d 100644
--- a/translations/wsjtx_en_GB.ts
+++ b/translations/wsjtx_en_GB.ts
@@ -2066,7 +2066,7 @@ Yellow when too low</source>
     </message>
     <message>
         <location filename="../widgets/mainwindow.ui" line="984"/>
-        <source>Frequncy entry</source>
+        <source>Frequency entry</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
@@ -2894,12 +2894,12 @@ list. The list can be maintained in Settings (F2).</source>
     </message>
     <message>
         <location filename="../widgets/mainwindow.ui" line="2638"/>
-        <source>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;6 digit locators cause 2 different mesages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</source>
+        <source>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;6 digit locators cause 2 different messages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
         <location filename="../widgets/mainwindow.ui" line="2641"/>
-        <source>6 digit locators cause 2 different mesages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.</source>
+        <source>6 digit locators cause 2 different messages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
diff --git a/translations/wsjtx_pt_PT.ts b/translations/wsjtx_pt_PT.ts
index 6167f5d8d..3aae238db 100644
--- a/translations/wsjtx_pt_PT.ts
+++ b/translations/wsjtx_pt_PT.ts
@@ -2066,7 +2066,7 @@ Yellow when too low</source>
     </message>
     <message>
         <location filename="../widgets/mainwindow.ui" line="984"/>
-        <source>Frequncy entry</source>
+        <source>Frequency entry</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
@@ -2894,12 +2894,12 @@ list. The list can be maintained in Settings (F2).</source>
     </message>
     <message>
         <location filename="../widgets/mainwindow.ui" line="2638"/>
-        <source>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;6 digit locators cause 2 different mesages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</source>
+        <source>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;6 digit locators cause 2 different messages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
         <location filename="../widgets/mainwindow.ui" line="2641"/>
-        <source>6 digit locators cause 2 different mesages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.</source>
+        <source>6 digit locators cause 2 different messages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
diff --git a/widgets/mainwindow.ui b/widgets/mainwindow.ui
index c37da3885..288ce9a57 100644
--- a/widgets/mainwindow.ui
+++ b/widgets/mainwindow.ui
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <ui version="4.0">
  <class>MainWindow</class>
  <widget class="QMainWindow" name="MainWindow">
@@ -981,7 +981,7 @@ QPushButton[state=&quot;ok&quot;] {
          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Select operating band or enter frequency in MHz or enter kHz increment followed by k.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
         </property>
         <property name="accessibleName">
-         <string>Frequncy entry</string>
+         <string>Frequency entry</string>
         </property>
         <property name="accessibleDescription">
          <string>Select operating band or enter frequency in MHz or enter kHz increment followed by k.</string>
@@ -2635,10 +2635,10 @@ list. The list can be maintained in Settings (F2).</string>
                       <item>
                        <widget class="QCheckBox" name="WSPR_prefer_type_1_check_box">
                         <property name="toolTip">
-                         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;6 digit locators cause 2 different mesages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+                         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;6 digit locators cause 2 different messages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
                         </property>
                         <property name="accessibleDescription">
-                         <string>6 digit locators cause 2 different mesages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.</string>
+                         <string>6 digit locators cause 2 different messages to be sent, the second contains the full locator but only a hashed callsign, other stations must have decoded the first once before they can decode your call in the second. Check this option to only send 4 digit locators if it will avoid the two message protocol.</string>
                         </property>
                         <property name="text">
                          <string>Prefer type 1 messages</string>