Update runtime files
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index f25b1ba..ee5ee26 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 8.2.  Last change: 2021 Jan 08
+*options.txt*	For Vim version 8.2.  Last change: 2021 Feb 13
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1568,7 +1568,11 @@
 			{only in GUI versions or when the |+xterm_clipboard|
 			feature is included}
 	This option is a list of comma separated names.
-	These names are recognized:
+	Note: if one of the items is "exclude:", then you can't add an item
+	after that.  Therefore do append an item with += but use ^= to
+	prepend, e.g.: >
+		set clipboard^=unnamed
+<	These names are recognized:
 
 						*clipboard-unnamed*
 	unnamed		When included, Vim will use the clipboard register '*'
@@ -4882,8 +4886,10 @@
 							*lcs-lead*
 	  lead:c	Character to show for leading spaces.  When omitted,
 			leading spaces are blank.  Overrides the "space"
-			setting for leading spaces.
-							*lcs-trail*
+			setting for leading spaces.  You can combine it with
+			"tab:", for example: >
+				:set listchars+=tab:>-,lead:.
+<							*lcs-trail*
 	  trail:c	Character to show for trailing spaces.  When omitted,
 			trailing spaces are blank.  Overrides the "space"
 			setting for trailing spaces.
@@ -6232,7 +6238,7 @@
 <
 				*'runtimepath'* *'rtp'* *vimfiles*
 'runtimepath' 'rtp'	string	(default:
-					Unix: "$HOME/.vim,
+					Unix:  "$HOME/.vim,
 						$VIM/vimfiles,
 						$VIMRUNTIME,
 						$VIM/vimfiles/after,
@@ -6242,7 +6248,7 @@
 						$VIMRUNTIME,
 						$VIM/vimfiles/after,
 						home:vimfiles/after"
-					PC:    "$HOME/vimfiles,
+					MS-Windows: "$HOME/vimfiles,
 						$VIM/vimfiles,
 						$VIMRUNTIME,
 						$VIM/vimfiles/after,
@@ -6254,8 +6260,8 @@
 						$VIM/vimfiles,
 						$VIMRUNTIME,
 						$VIM/vimfiles/after,
-						$BE_USER_SETTINGS/vim/after")
-					VMS: "sys$login:vimfiles,
+						$BE_USER_SETTINGS/vim/after"
+					VMS:   "sys$login:vimfiles,
 						$VIM/vimfiles,
 						$VIMRUNTIME,
 						$VIM/vimfiles/after,