Added installation instructions

MANUAL

@@ -1,6 +1,32 @@
 Video Disk Recorder User's Manual
 ---------------------------------
 
+* Navigating through the On Screen Menus
+
+  The "Main" menu can be called up with the "Menu" key of your remote
+  control unit. The "Up" and "Down" keys are used to select a specific
+  item. The "Left" and "Right" keys can be used to change options, and
+  the numeric keys allow direct input of numeric data. The "Ok" key
+  confirms any changes (or switches to a channel in the "Channels" menu).
+  The "Back" key goes back one level in the menu structure, discarding
+  any changes that might have been made in the current menu.
+  
+  In the "Timers" menu, the current timer can be enabled or disabled with
+  the "Right" or "Left" key, respectively (enabled timers are marked with ">").
+  "Ok" here opens the "Edit timer" menu.
+  
+  Textual options, like channel names or recording file names, can be edited
+  by pressing the "Right" button (which puts brackets around the current
+  character as in "[R]TL"), selecting the desired character position with
+  "Left" and "Right", and changing the character with the "Up" and "Down"
+  keys. "Ok" then confirms the changes.
+  
+  The "Red", "Green", "Yellow" and "Blue" buttons have special meanings
+  in the various menus and are listed at the bottom of the on-screen-display.
+  
+  At any point in the menu system, pressing the "Menu" key again will
+  immediately leave the menu system.
+
 * Selecting a Channel
 
   There are three ways to select a channel:
@@ -36,6 +62,8 @@ Video Disk Recorder User's Manual
 
 * Replay Control
 
+  The following keys have the listed meaning in Replay mode:
+
   - "Begin"   Positions to beginning of the recording and starts playback
               from there.
   - "Pause"   Halts playback at the current frame. Press again to continue
@@ -45,6 +73,10 @@ Video Disk Recorder User's Manual
   - "Search"  Runs playback forward or backward at a higher speed. Press
               again to resume normal speed.
   - "Skip"    Skips about 60 seconds forward or backward.
+  - "Ok"      Brings up the replay progress display, which shows the date,
+              time and title of the recording, a progress bar and the
+              current and total time of the recording.
+              Press "Ok" again to turn off the progress display.
 
 * Programming the Timer