Issue #10405: Document IDLE context menus in Standard Library document
and IDLE Help file.  (Thanks to Nick ODell and Todd Rovito for suggestions.)
Update Debug menu options in docs to match current code plus various other
minor IDLE doc and help edits.
diff --git a/Lib/idlelib/help.txt b/Lib/idlelib/help.txt
index 7bfd2ca..c179555 100644
--- a/Lib/idlelib/help.txt
+++ b/Lib/idlelib/help.txt
@@ -80,7 +80,7 @@
 Debug Menu (only in Shell window):
 
 	Go to File/Line   -- look around the insert point for a filename
-		             and linenumber, open the file, and show the line
+		             and line number, open the file, and show the line
 	Debugger (toggle) -- Run commands in the shell under the debugger
 	Stack Viewer      -- Show the stack traceback of the last exception
 	Auto-open Stack Viewer (toggle) -- Open stack viewer on traceback
@@ -92,7 +92,7 @@
                           Startup Preferences may be set, and Additional Help
                           Sources can be specified.
 			  
-			  On MacOS X this menu is not present, use
+			  On OS X this menu is not present, use
 			  menu 'IDLE -> Preferences...' instead.
 	---
 	Code Context --	  Open a pane at the top of the edit window which
@@ -120,6 +120,15 @@
 	---
 	(Additional Help Sources may be added here)
 
+Edit context menu (Right-click / Control-click in Edit window):
+
+	Set Breakpoint   -- Sets a breakpoint (when debugger open)
+	Clear Breakpoint -- Clears the breakpoint on that line
+
+Shell context menu (Right-click / Control-click in Shell window):
+
+	Go to file/line -- Same as in Debug menu
+
 
 ** TIPS **
 ==========
@@ -222,7 +231,7 @@
 
 	Alt-p retrieves previous command matching what you have typed.
 	Alt-n retrieves next.
-	      (These are Control-p, Control-n on the Mac)
+	      (These are Control-p, Control-n on OS X)
 	Return while cursor is on a previous command retrieves that command.
 	Expand word is also useful to reduce typing.