A few changes to the Readme.txt file. (#267)

A few changes to Readme.txt file.

- add details for NR Digits
- rearrange some of the Function Key Assignments
- remove some trailing whitespace

I rearranged the function key assignments to group them in logical
groups. Users will either use one group or the other. Some of the older
logging programs are using the punctuation characters and the newer
logging programs are using the function keys.

You should be able to merge this into your branch. Or send it back to me
if you want other changes. Of course, please merge it and change if you
want. Tnx, Mike

Readme.txt

@@ -98,19 +98,19 @@ CONFIGURATION
 
   Additional Settings
     RIT - Many never noticed that the original program has an RIT function
-          in the receiver. It is the unmarked teal bar at the very bottom of 
-          the screen. If you can't hear someone calling you, or if they are off 
-          frequency this is why. This is controlled by the up and down arrows on 
-          the keyboard as well as the mouse scroll wheel. This is handy to 
+          in the receiver. It is the unmarked teal bar at the very bottom of
+          the screen. If you can't hear someone calling you, or if they are off
+          frequency this is why. This is controlled by the up and down arrows on
+          the keyboard as well as the mouse scroll wheel. This is handy to
           focus on a particular responder.
-          The RIT is adjusted between -500 and 500 Hz incremented in 50Hz Steps. 
+          The RIT is adjusted between -500 and 500 Hz incremented in 50Hz Steps.
           You can modify the RIT step increment in the MorseRunner.ini file, e.g.:
             [Settings]
             RitStepIncr=50
           Valid values range between -500 and 500. Negative values can be used to
-          change the direction of Up/Down arrow keys or mouse wheel movement. Note 
-          that a zero value will disable this feature and is not recommended. 
-          HST Competition mode ignores this setting and defaults to 50Hz/Step.   
+          change the direction of Up/Down arrow keys or mouse wheel movement. Note
+          that a zero value will disable this feature and is not recommended.
+          HST Competition mode ignores this setting and defaults to 50Hz/Step.
 
     Audio Recording Enabled - You can record yourself under "File" menu 
       "Audio Recording Enabled". When this menu option is checked, MR saves
@@ -153,10 +153,16 @@ CONFIGURATION
         character speeds for each level of classes. 
 
     NR Digits
-      The number of digits the responding station will send.  
+      The number of digits the responding station will send.
+        There are four possible settings:
+          1 - generates random serial numbers starting near 1 and increasing as
+	      the contest runs. Matches default behavior found in version 1.68.
+          2 - 2 digits are sent, randomly generated between 1 and 99.
+          3 - 3 digits are sent, randomly generated between 1 and 999.
+          4 - 4 digits are sent, randomly generated between 1 and 9999.
 
   Responses
-    There are five basic responses that you can receive
+    There are five basic responses that you can receive:
        1. nothing 
           If calling CQ, no one heard you call CQ again. 
           If you responded to someone and you got silence, the call sent was incorrect. 
@@ -177,40 +183,45 @@ CONFIGURATION
 KEY ASSIGNMENTS
   F1               - Send CQ (sounds like seek you)
   F2               - Sends your full exchange
-  semicolon        - Sends your full exchange
-  insert key       - Sends your full exchange
   F3               - Send TU (thank you)
-  plus key (+)     - Send TU (thank you)
-  period (.)       - Send TU (thank you)
-  bracket ([)      - Send TU (thank you)
   F4               - Sends your call sign
   F5               - Sends responder's call sign
   F6               - Send B4 
   F7               - Sends the question mark (?)
   F8               - Sends NIL (not in log)
-  Escape key       - Stops your sending
   F11              - Wipes the input fields 
+  F12              - sends NR? (request their exchange to be repeated)
+
+  Enter Key        - Enter Sends Message (msg sent depends on state of QSO)
+  Space Bar        - auto completes and jumps between input fields
+  Escape key       - Stops your sending
+
+  Semicolon        - Sends your full exchange
+  Insert key       - Sends your full exchange
+  Plus key (+)     - Send TU (thank you) and saves QSO
+  Period (.)       - Send TU (thank you) and saves QSO
+  Bracket ([)      - Send TU (thank you) and saves QSO
+  Comma (,)        - Send TU (thank you) and saves QSO
+
   Ctrl-W           - Wipes the input fields
   Alt-W            - Wipes the input fields (with Windows chime)
   Shift-Enter      - Saves the QSO without sending anything
   Ctrl-Enter       - Saves the QSO without sending anything
   Alt-Enter        - Saves the QSO without sending anything (with Windows Chime)  
-  Space Bar        - auto completes and jumps between input fields
   Tab Key          - moves to Call, RST, CQ-Zone, Station Call, and your exchange
   Shift Tab        - moves to Call, RST, CQ-Zone, Station Call, and your exchange
-  Enter Key        - Sends various messages depending on the state of the QSO. 
   Up arrow         - moves the RIT right (reversible in settings)
   Down arrow       - moves the RIT left (reversible in settings)
-  Mouse wheel      - moves the RIT 
+  Mouse wheel      - moves the RIT
   Left arrow       - adjusts the RX Bandwidth
-  Right arrow      - adjusts the RX Bandwidth  
-  Ctrl-up arrow    - adjusts the RX Bandwidth  
-  Ctrl-down arrow  - adjusts the RX Bandwidth  
-  Ctrl-mouse wheel - adjusts the RX Bandwidth  
-  Page up key      - adjusts the keying speed up    
-  Ctrl-F10         - adjusts the keying speed up
+  Right arrow      - adjusts the RX Bandwidth
+  Ctrl-up arrow    - adjusts the RX Bandwidth
+  Ctrl-down arrow  - adjusts the RX Bandwidth
+  Ctrl-mouse wheel - adjusts the RX Bandwidth
   Page down key    - adjusts the keying speed down
+  Page up key      - adjusts the keying speed up
   Ctrl-F9          - adjusts the keying speed down
+  Ctrl-F10         - adjusts the keying speed up
 
 STATISTICS AREA
   The bottom right panel shows your current score, both Raw (calculated