Update runtime files
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 9451ff2..826a0b4 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt*	For Vim version 8.2.  Last change: 2022 Mar 02
+*syntax.txt*	For Vim version 8.2.  Last change: 2022 Apr 06
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -4898,7 +4898,7 @@
 :hi[ghlight] {group-name}
 			List one highlight group.
 
-						*highlight-clear*
+						*highlight-clear* *:hi-clear*
 :hi[ghlight] clear	Reset all highlighting to the defaults.  Removes all
 			highlighting for groups added by the user!
 			Uses the current value of 'background' to decide which
@@ -4961,7 +4961,7 @@
 					*inverse* *italic* *standout*
 					*nocombine* *strikethrough*
 term={attr-list}			*attr-list* *highlight-term* *E418*
-	attr-list is a comma separated list (without spaces) of the
+	attr-list is a comma-separated list (without spaces) of the
 	following items (in any order):
 		bold
 		underline
@@ -5145,7 +5145,7 @@
 	When setting the font for the "Normal" group, this becomes the default
 	font (until the 'guifont' option is changed; the last one set is
 	used).
-	The following only works with Motif and Athena, not with other GUIs:
+	The following only works with Motif, not with other GUIs:
 	When setting the font for the "Menu" group, the menus will be changed.
 	When setting the font for the "Tooltip" group, the tooltips will be
 	changed.
@@ -5382,7 +5382,7 @@
 		Also used for the toolbar.
 		Applicable highlight arguments: font, guibg, guifg.
 
-		NOTE: For Motif and Athena the font argument actually
+		NOTE: For Motif the font argument actually
 		specifies a fontset at all times, no matter if 'guifontset' is
 		empty, and as such it is tied to the current |:language| when
 		set.
@@ -5396,7 +5396,7 @@
 Tooltip		Current font, background and foreground of the tooltips.
 		Applicable highlight arguments: font, guibg, guifg.
 
-		NOTE: For Motif and Athena the font argument actually
+		NOTE: For Motif the font argument actually
 		specifies a fontset at all times, no matter if 'guifontset' is
 		empty, and as such it is tied to the current |:language| when
 		set.