diff --git a/runtime/doc/mbyte.txt b/runtime/doc/mbyte.txt
index e38c30c..3bb2bfb 100644
--- a/runtime/doc/mbyte.txt
+++ b/runtime/doc/mbyte.txt
@@ -1,4 +1,4 @@
-*mbyte.txt*     For Vim version 9.1.  Last change: 2024 May 11
+*mbyte.txt*     For Vim version 9.1.  Last change: 2024 Jun 09
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar et al.
@@ -801,7 +801,7 @@
   number of Hira-gana characters are 76.  So, first, we pre-input text as
   pronounced in Hira-gana, second, we convert Hira-gana to Kanji or Kata-Kana,
   if needed.  There are some Kana-Kanji conversion server: jserver
-  (distributed with Wnn, see below) and canna.Canna can be found at:
+  (distributed with Wnn, see below) and canna.  Canna can be found at:
   https://osdn.net/projects/canna/
 
 There is a good input system: Wnn4.2.  Wnn 4.2 contains,
@@ -1356,7 +1356,7 @@
 doesn't always work.  See the system specific remarks below, and 'langmenu'.
 
 
-USING UTF-8 IN X-Windows				*utf-8-in-xwindows*
+USING UTF-8 IN X-WINDOWS				*utf-8-in-xwindows*
 
 Note: This section does not apply to the GTK+ 2 GUI.
 
diff --git a/runtime/doc/quickfix.txt b/runtime/doc/quickfix.txt
index f0c1d74..7f3654c 100644
--- a/runtime/doc/quickfix.txt
+++ b/runtime/doc/quickfix.txt
@@ -1,4 +1,4 @@
-*quickfix.txt*  For Vim version 9.1.  Last change: 2024 Apr 28
+*quickfix.txt*  For Vim version 9.1.  Last change: 2024 Jun 09
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1335,7 +1335,7 @@
 Additional arguments can be passed to pandoc:
 
 - either by appending them to make, say `:make html --self-contained` .
-- or setting them in `b:pandoc_compiler_args` or `g:pandoc_compiler_args`
+- or setting them in `b:pandoc_compiler_args` or `g:pandoc_compiler_args`.
 
 PERL					*quickfix-perl* *compiler-perl*
 
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 1bc556c..b6b3d8e 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt*	For Vim version 9.1.  Last change: 2024 Jun 05
+*syntax.txt*	For Vim version 9.1.  Last change: 2024 Jun 09
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -935,14 +935,14 @@
 Configuration
 
 The following variables control certain syntax highlighting features.
-You can add them to your .vimrc: >
+You can add them to your .vimrc.
+
+To enables TypeScript and TSX for ".astro" files (default "disable"): >
 	let g:astro_typescript = "enable"
 <
-Enables TypeScript and TSX for ".astro" files. Default Value: "disable" >
+To enables Stylus for ".astro" files (default "disable"): >
 	let g:astro_stylus = "enable"
 <
-Enables Stylus for ".astro" files. Default Value: "disable"
-
 NOTE: You need to install an external plugin to support stylus in astro files.
 
 
@@ -1909,7 +1909,7 @@
 especially for large files.
 
 
-HTML/OS (by Aestiva)				*htmlos.vim* *ft-htmlos-syntax*
+HTML/OS (BY AESTIVA)				*htmlos.vim* *ft-htmlos-syntax*
 
 The coloring scheme for HTML/OS works as follows:
 
diff --git a/runtime/doc/usr_52.txt b/runtime/doc/usr_52.txt
index 553ed88..d5062e2 100644
--- a/runtime/doc/usr_52.txt
+++ b/runtime/doc/usr_52.txt
@@ -1,4 +1,4 @@
-*usr_52.txt*	For Vim version 9.1.  Last change: 2024 May 31
+*usr_52.txt*	For Vim version 9.1.  Last change: 2024 Jun 09
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -341,7 +341,7 @@
 
 COMMENT PACKAGE
 
-Vim comes with a comment plugin, written in Vim9 script |comment-install|.
+Vim comes with a comment plugin, written in Vim9 script.  |comment-install|
 Have a look at the package located at $VIMRUNTIME/pack/dist/opt/comment/
 
 HIGHLIGHT YANK PLUGIN
@@ -350,27 +350,27 @@
 |getregionpos()| function, available since Vim 9.1.0446.
 
 Copy the following example into a new file and place it into your plugin directory
-and it will be active next time you start Vim |add-plugin|: >
+and it will be active next time you start Vim.  |add-plugin|: >
 
 	vim9script
 
 	def HighlightedYank(hlgroup = 'IncSearch', duration = 300, in_visual = true)
 	  if v:event.operator ==? 'y'
-		  if !in_visual && visualmode() != null_string
-			visualmode(1)
-			return
-		  endif
-		  var [beg, end] = [getpos("'["), getpos("']")]
-		  var type = v:event.regtype ?? 'v'
-		  var pos = getregionpos(beg, end, {type: type})
-		  var end_offset = (type == 'V' || v:event.inclusive) ? 1 : 0
-		  var m = matchaddpos(hlgroup, pos->mapnew((_, v) => {
-			var col_beg = v[0][2] + v[0][3]
-			var col_end = v[1][2] + v[1][3] + end_offset
-			return [v[0][1], col_beg, col_end - col_beg]
-		  }))
-		  var winid = win_getid()
-		  timer_start(duration, (_) => m->matchdelete(winid))
+	    if !in_visual && visualmode() != null_string
+	      visualmode(1)
+	      return
+	    endif
+	    var [beg, end] = [getpos("'["), getpos("']")]
+	    var type = v:event.regtype ?? 'v'
+	    var pos = getregionpos(beg, end, {type: type})
+	    var end_offset = (type == 'V' || v:event.inclusive) ? 1 : 0
+	    var m = matchaddpos(hlgroup, pos->mapnew((_, v) => {
+	      var col_beg = v[0][2] + v[0][3]
+	      var col_end = v[1][2] + v[1][3] + end_offset
+	      return [v[0][1], col_beg, col_end - col_beg]
+	    }))
+	    var winid = win_getid()
+	    timer_start(duration, (_) => m->matchdelete(winid))
 	  endif
 	enddef