diff --git a/runtime/doc/debug.txt b/runtime/doc/debug.txt
index 1d3090a..4963fdd 100644
--- a/runtime/doc/debug.txt
+++ b/runtime/doc/debug.txt
@@ -1,4 +1,4 @@
-*debug.txt*     For Vim version 9.1.  Last change: 2019 May 07
+*debug.txt*     For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -160,7 +160,7 @@
 3.5 Obtaining Microsoft Debugging Tools ~
 
 The Debugging Tools for Windows (including WinDbg) can be downloaded from
-    http://www.microsoft.com/whdc/devtools/debugging/default.mspx
+    https://learn.microsoft.com/en-us/windows-hardware/drivers/debugger/debugger-download-tools
 This includes the WinDbg debugger.
 
 Visual C++ 2005 Express Edition can be downloaded for free from:
diff --git a/runtime/doc/develop.txt b/runtime/doc/develop.txt
index 1b1ad85..678a924 100644
--- a/runtime/doc/develop.txt
+++ b/runtime/doc/develop.txt
@@ -1,4 +1,4 @@
-*develop.txt*   For Vim version 9.1.  Last change: 2022 Sep 20
+*develop.txt*   For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -152,7 +152,7 @@
   everything but the kitchen sink, but some people say that you can clean one
   with it.  ;-)"
   To use Vim with gdb see |terminal-debugger|.  Other (older) tools can be
-  found at http://www.agide.org and http://clewn.sf.net.
+  found at http://www.agide.org (link seems dead)  and http://clewn.sf.net.
 - Vim is not a fancy GUI editor that tries to look nice at the cost of
   being less consistent over all platforms.  But functional GUI features are
   welcomed.
diff --git a/runtime/doc/gui.txt b/runtime/doc/gui.txt
index de33c9c..3b55919 100644
--- a/runtime/doc/gui.txt
+++ b/runtime/doc/gui.txt
@@ -1,4 +1,4 @@
-*gui.txt*       For Vim version 9.1.  Last change: 2024 May 01
+*gui.txt*       For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1238,7 +1238,8 @@
 	endif
 
 A recommended Japanese font is MS Mincho.  You can find info here:
-http://www.lexikan.com/mincho.htm
+https://learn.microsoft.com/en-us/typography/font-list/ms-mincho
+It should be distributed with Windows.
 
 ==============================================================================
 8. Shell Commands					*gui-shell*
diff --git a/runtime/doc/if_cscop.txt b/runtime/doc/if_cscop.txt
index 3fa8f81..bb4c6a1 100644
--- a/runtime/doc/if_cscop.txt
+++ b/runtime/doc/if_cscop.txt
@@ -1,4 +1,4 @@
-*if_cscop.txt*  For Vim version 9.1.  Last change: 2022 Jan 08
+*if_cscop.txt*  For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Andy Kahn
@@ -358,7 +358,7 @@
 limited to Unix systems.
 
 Additionally Cscope support works for Win32.  For more information and a
-cscope version for Win32 see:
+cscope version for Win32 see (link seems dead):
 
 	http://iamphet.nm.ru/cscope/index.html
 
diff --git a/runtime/doc/mbyte.txt b/runtime/doc/mbyte.txt
index 91154a7..e38c30c 100644
--- a/runtime/doc/mbyte.txt
+++ b/runtime/doc/mbyte.txt
@@ -1,4 +1,4 @@
-*mbyte.txt*     For Vim version 9.1.  Last change: 2022 Apr 03
+*mbyte.txt*     For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar et al.
@@ -451,18 +451,19 @@
     Chinese:	    hc
 	Hc is "Hanzi Converter".  Hc convert a GB file to a Big5 file, or Big5
 	file to GB file.  Hc can be found at:
+	https://www.freshports.org/chinese/hc
 	ftp://ftp.cuhk.hk/pub/chinese/ifcss/software/unix/convert/hc-30.tar.gz
 
     Korean:	    hmconv
 	Hmconv is Korean code conversion utility especially for E-mail.  It can
 	convert between EUC-KR and ISO-2022-KR.  Hmconv can be found at:
-	ftp://ftp.kaist.ac.kr/pub/hangul/code/hmconv/
+	https://www.freshports.org/korean/hmconv/
 
     Multilingual:   lv
 	Lv is a Powerful Multilingual File Viewer.  And it can be worked as
 	|charset| converter.  Supported |charset|: ISO-2022-CN, ISO-2022-JP,
 	ISO-2022-KR, EUC-CN, EUC-JP, EUC-KR, EUC-TW, UTF-7, UTF-8, ISO-8859
-	series, Shift_JIS, Big5 and HZ.  Lv can be found at:
+	series, Shift_JIS, Big5 and HZ.  Lv can be found at (link seems dead):
 	http://www.ff.iij4u.or.jp/~nrt/lv/index.html
 
 
@@ -777,13 +778,13 @@
 
   For example, there are xwnmo and kinput2 Japanese |IM-server|, both are
   FrontEnd system.  Xwnmo is distributed with Wnn (see below), kinput2 can be
-  found at: ftp://ftp.sra.co.jp/pub/x11/kinput2/
+  found at (link seems dead): ftp://ftp.sra.co.jp/pub/x11/kinput2/
 
   For Chinese, there's a great XIM server named "xcin", you can input both
   Traditional and Simplified Chinese characters.  And it can accept other
-  locale if you make a correct input table.  Xcin can be found at:
-  http://cle.linux.org.tw/xcin/
-  Others are scim: http://scim.freedesktop.org/ and fcitx:
+  locale if you make a correct input table.  Xcin can be found at (link seems
+  dead): http://cle.linux.org.tw/xcin/
+  Others are scim: https://www.freedesktop.org/wiki/Software/scim/  and fcitx:
   http://www.fcitx.org/
 
 - Conversion Server
@@ -800,8 +801,8 @@
   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:
-  http://canna.sourceforge.jp/
+  (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,
     xwnmo (|IM-server|)
diff --git a/runtime/doc/netbeans.txt b/runtime/doc/netbeans.txt
index a62123c..ee227b4 100644
--- a/runtime/doc/netbeans.txt
+++ b/runtime/doc/netbeans.txt
@@ -1,4 +1,4 @@
-*netbeans.txt*  For Vim version 9.1.  Last change: 2023 Nov 26
+*netbeans.txt*  For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Gordon Prieur et al.
@@ -77,8 +77,8 @@
 in recent releases.
 
 For more information visit the main NetBeans web site http://www.netbeans.org.
-The External Editor is now, unfortunately, declared obsolete.  See
- http://externaleditor.netbeans.org.
+The External Editor is now, unfortunately, declared obsolete.  See (link seems
+dead): http://externaleditor.netbeans.org.
 
 Sun Microsystems, Inc. also ships NetBeans under the name Sun ONE Studio.
 Visit http://www.sun.com for more information regarding the Sun ONE Studio
@@ -147,8 +147,9 @@
 The Win32 support is now in beta stage.
 
 To use XPM signs on Win32 (e.g. when using with NetBeans) you can compile
-XPM by yourself or use precompiled libraries from http://iamphet.nm.ru/misc/
-(for MS Visual C++) or http://gnuwin32.sourceforge.net (for MinGW).
+XPM by yourself or use precompiled libraries from (link seems dead):
+http://iamphet.nm.ru/misc/ (for MS Visual C++) or
+http://gnuwin32.sourceforge.net (for MinGW).
 
 Enable debugging:
 -----------------
@@ -946,7 +947,8 @@
 it.
 
 For C, C++, and Fortran support you will also need the cpp module.  See
-http://cpp.netbeans.org for information regarding this module.
+http://cpp.netbeans.org (link seems dead) for information regarding this
+module.
 
 You can also download Sun ONE Studio from Sun Microsystems, Inc for a 30 day
 free trial.  See http://www.sun.com for further details.
diff --git a/runtime/doc/os_vms.txt b/runtime/doc/os_vms.txt
index 862f31d..4549c00 100644
--- a/runtime/doc/os_vms.txt
+++ b/runtime/doc/os_vms.txt
@@ -1,4 +1,4 @@
-*os_vms.txt*    For Vim version 9.1.  Last change: 2023 Dec 14
+*os_vms.txt*    For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL
@@ -40,7 +40,6 @@
 
 You can download precompiled executables from:
 	http://www.polarhome.com/vim/
-	ftp://ftp.polarhome.com/pub/vim/
 
 To use the precompiled binary version, you need one of these archives:
 
diff --git a/runtime/doc/os_win32.txt b/runtime/doc/os_win32.txt
index bbe9940..54c8e91 100644
--- a/runtime/doc/os_win32.txt
+++ b/runtime/doc/os_win32.txt
@@ -1,4 +1,4 @@
-*os_win32.txt*  For Vim version 9.1.  Last change: 2023 Dec 04
+*os_win32.txt*  For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by George Reilly
@@ -250,8 +250,7 @@
    copy of tee (and a number of other GNU tools) at
    http://gnuwin32.sourceforge.net or http://unxutils.sourceforge.net
    Alternatively, try the more recent Cygnus version of the GNU tools at
-   http://www.cygwin.com  Other Unix-style tools for Win32 are listed at
-   http://directory.google.com/Top/Computers/Software/Operating_Systems/Unix/Win32/
+   http://www.cygwin.com
    When you do get a copy of tee, you'll need to add >
 	:set shellpipe=\|\ tee
 <  to your _vimrc.
diff --git a/runtime/doc/pi_netrw.txt b/runtime/doc/pi_netrw.txt
index 3efc60f..aeaca0b 100644
--- a/runtime/doc/pi_netrw.txt
+++ b/runtime/doc/pi_netrw.txt
@@ -1,4 +1,4 @@
-*pi_netrw.txt*  For Vim version 9.1.  Last change: 2024 May 08
+*pi_netrw.txt*  For Vim version 9.1.  Last change: 2024 May 11
 
 	    ------------------------------------------------
 	    NETRW REFERENCE MANUAL    by Charles E. Campbell
@@ -2033,11 +2033,7 @@
     better way to do that: I can use a regular ssh account which uses a
     password to access the material without the need to key-in the password
     each time. It's good for security and convenience. I tried ssh public key
-    authorization + ssh-agent, implementing this, and it works! Here are two
-    links with instructions:
-
-    http://www.ibm.com/developerworks/library/l-keyc2/
-    http://sial.org/howto/openssh/publickey-auth/
+    authorization + ssh-agent, implementing this, and it works!
 
 
     Ssh hints:
diff --git a/runtime/doc/pi_tar.txt b/runtime/doc/pi_tar.txt
index 0ab111c..5b317d6 100644
--- a/runtime/doc/pi_tar.txt
+++ b/runtime/doc/pi_tar.txt
@@ -1,4 +1,4 @@
-*pi_tar.txt*	For Vim version 9.1.  Last change: 2022 Oct 17
+*pi_tar.txt*	For Vim version 9.1.  Last change: 2024 May 11
 
 		       +====================+
 		       | Tar File Interface |
@@ -164,7 +164,8 @@
 	v2			* converted to use Vim7's new autoload feature
 				  by Bram Moolenaar
 	v1	(original)	* Michael Toren
-				  (see http://michael.toren.net/code/)
+				  (see http://michael.toren.net/code/
+				   link seems dead)
 
 ==============================================================================
 vim:tw=78:ts=8:noet:ft=help
diff --git a/runtime/doc/print.txt b/runtime/doc/print.txt
index 84fca44..55a9c37 100644
--- a/runtime/doc/print.txt
+++ b/runtime/doc/print.txt
@@ -1,4 +1,4 @@
-*print.txt*     For Vim version 9.1.  Last change: 2022 Oct 01
+*print.txt*     For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -497,10 +497,11 @@
 Traditional Chinese fonts available at:
 
   http://examples.oreilly.com/cjkvinfo/adobe/samples/
+  https://resources.oreilly.com/examples/9781565922242/
 
 You can find descriptions of the various fonts in the read me file at
 
-  http://examples.oreilly.de/english_examples/cjkvinfo/adobe/00README
+  https://resources.oreilly.com/examples/9781565922242/-/blob/master/00README
 
 Please read your printer documentation on how to install new fonts.
 
@@ -591,7 +592,7 @@
 - GNU Ghostscript which is available under the GNU General Public License.  It
   can be obtained from:
 
-    ftp://mirror.cs.wisc.edu/pub/mirrors/ghost/gnu/
+    https://www.gnu.org/software/ghostscript
 
 - A commercial version for inclusion in commercial products.
 
@@ -616,10 +617,7 @@
 - Ghostview.  Obtainable from:
 
     http://www.cs.wisc.edu/~ghost/gv/
-
-- gv.  Derived from Ghostview.  Obtainable from:
-
-    http://wwwthep.physik.uni-mainz.de/~plass/gv/
+    https://www.gnu.org/software/gv/
 
   Copies (possibly not the most recent) can be found at:
 
@@ -627,7 +625,8 @@
 
 OpenVMS
 
-- Is apparently supported in the main code now (untested).  See:
+- Is apparently supported in the main code now (untested).
+  See (link seems dead):
 
     http://wwwthep.physik.uni-mainz.de/~plass/gv/
 
@@ -644,12 +643,6 @@
 
     http://www.cs.wisc.edu/~ghost/gsview/
 
-- BMV.  Different from Ghostview and gv in that it doesn't use X but svgalib.
-  Obtainable from:
-
-    ftp://sunsite.unc.edu/pub/Linux/apps/graphics/viewers/svga/bmv-1.2.tgz
-
-
 7.3 PSUtils
 
 PSUtils is a collection of utility programs for manipulating PostScript
diff --git a/runtime/doc/spell.txt b/runtime/doc/spell.txt
index dea3adb..ab3b120 100644
--- a/runtime/doc/spell.txt
+++ b/runtime/doc/spell.txt
@@ -1,4 +1,4 @@
-*spell.txt*	For Vim version 9.1.  Last change: 2023 May 25
+*spell.txt*	For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -903,7 +903,7 @@
 				*spell-AUTHOR* *spell-EMAIL* *spell-COPYRIGHT*
 	NAME		Name of the language
 	VERSION		1.0.1  with fixes
-	HOME		http://www.myhome.eu
+	HOME		<URL>
 	AUTHOR		John Doe
 	EMAIL		john AT Doe DOT net
 	COPYRIGHT	LGPL
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index fbf48c6..bbdda4f 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 May 05
+*syntax.txt*	For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1483,9 +1483,9 @@
 version 3.1.1, which is the default syntax highlighting file, and one for
 Euphoria version 4.0.5 or later.
 
-Euphoria version 3.1.1 (http://www.rapideuphoria.com/) is still necessary
-for developing applications for the DOS platform, which Euphoria version 4
-(http://www.openeuphoria.org/) does not support.
+Euphoria version 3.1.1 (http://www.rapideuphoria.com/ link seems dead) is
+still necessary for developing applications for the DOS platform, which
+Euphoria version 4 (http://www.openeuphoria.org/) does not support.
 
 The following file extensions are auto-detected as Euphoria file type:
 
@@ -1542,7 +1542,8 @@
 
 FLEXWIKI				*flexwiki.vim* *ft-flexwiki-syntax*
 
-FlexWiki is an ASP.NET-based wiki package available at http://www.flexwiki.com
+FlexWiki is an ASP.NET-based wiki package which used to be available at
+http://www.flexwiki.com
 NOTE: This site currently doesn't work, on Wikipedia is mentioned that
 development stopped in 2009.
 
diff --git a/runtime/doc/tagsrch.txt b/runtime/doc/tagsrch.txt
index d3d549a..7091f83 100644
--- a/runtime/doc/tagsrch.txt
+++ b/runtime/doc/tagsrch.txt
@@ -546,7 +546,8 @@
 			http://www.fleiner.com/jtags/.
 ptags.py		For Python, in Python.  Found in your Python source
 			directory at Tools/scripts/ptags.py.
-ptags			For Perl, in Perl.  It can be found at
+ptags			For Perl, in Perl.  It can be found at (link seems
+			dead):
 			http://www.eleves.ens.fr:8080/home/nthiery/Tags/.
 gnatxref		For Ada.  See http://www.gnuada.org/.  gnatxref is
 			part of the gnat package.
diff --git a/runtime/doc/test_urls.vim b/runtime/doc/test_urls.vim
index e23f879..b75dc29 100644
--- a/runtime/doc/test_urls.vim
+++ b/runtime/doc/test_urls.vim
@@ -12,11 +12,11 @@
   else
     let s:outdev = '/dev/null'
   endif
-" Restorer: For Windows users. If "curl" or "weget" is installed on the system
-" but not in %PATH%, add the full routes for them to this environment variable.
+" Restorer: For Windows users. If "curl" or "wget" is installed on the system
+" but not in %PATH%, add the full path to them to %PATH% environment variable.
   if executable('curl')
     " Note: does not follow redirects!
-    let s:command1 = 'curl --silent --fail --output ' ..s:outdev.. ' --head '
+    let s:command1 = 'curl --silent --max-time 5 --fail --output ' ..s:outdev.. ' --head '
     let s:command2 = ""
   elseif executable('wget')
     " Note: only allow a couple of redirects
diff --git a/runtime/doc/todo.txt b/runtime/doc/todo.txt
index 8712008..9b15d00 100644
--- a/runtime/doc/todo.txt
+++ b/runtime/doc/todo.txt
@@ -1,4 +1,4 @@
-*todo.txt*      For Vim version 9.1.  Last change: 2024 Mar 28
+*todo.txt*      For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1710,7 +1710,8 @@
 Or minpac: https://github.com/k-takata/minpac, since it leverages the builtin
 package feature.
 Long message about this from ZyX, 2014 Mar 23.  And following replies.
-Also see http://vim-wiki.mawercer.de/wiki/topic/vim%20plugin%20managment.html
+Also see (link seems dead):
+http://vim-wiki.mawercer.de/wiki/topic/vim%20plugin%20managment.html
 User view:
 - Support multiple sources, basically any http:// URL. Or a central place that
   will work for everybody (github?  redirects from vim.org?).
@@ -2441,7 +2442,7 @@
 Would be more consistent when an existing tab is re-used. (Tony Mechelynck)
 
 Using Aap to build Vim: add remarks about how to set personal preferences.
-Example on http://www.calmar.ws/tmp/aap.html
+Example on http://www.calmar.ws/tmp/aap.html (link seems dead)
 
 When 'diffopt' has "context:0" a single deleted line causes two folds to merge
 and mess up syncing. (Austin Jennings, 2008 Jan 31)
@@ -2472,7 +2473,7 @@
 More AmigaOS4 patches. (Peter Bengtsson, Nov 9)
 
 Amiga patches with vbcc. (Adrien Destugues, 2010 Aug 30)
-http://pulkomandy.ath.cx/drop/vim73_vbcc_amiga.diff
+(link seems dead): http://pulkomandy.ath.cx/drop/vim73_vbcc_amiga.diff
 
 Problem with compound words?  (Bert, 2008 May 6)
 No warning for when flags are defined after they are used in an affix.
@@ -2542,8 +2543,9 @@
 
 Win32: XPM support only works with path without spaces.  Patch by Mathias
 Michaelis, 2006 Jun 9.  Another patch for more path names, 2006 May 31.
-New version: http://members.tcnet.ch/michaelis/vim/patches.zip (also for other
-patches by Mathias, see mail Feb 22)
+New version (link seems dead):
+http://members.tcnet.ch/michaelis/vim/patches.zip
+(also for other patches by Mathias, see mail Feb 22)
 
 Win32: compiling with normal features and OLE fails.  Patch by Mathias
 Michaelis, 2006 Jun 4.
@@ -3068,7 +3070,7 @@
     the screen.
 8   The -P argument doesn't work very well with many MDI applications.
     The last argument of CreateWindowEx() should be used, see MSDN docs.
-    Tutorial: http://win32assembly.online.fr/tut32.html
+    Tutorial (link seems dead): http://win32assembly.online.fr/tut32.html
 6   Win32 GUI: With "-u NONE -U NONE" and doing "CTRL-W v" "CTRL-W o", the ":"
     of ":only" is highlighted like the cursor.  (Lipelis)
 8   When 'encoding' is "utf-8", should use 'guifont' for both normal and wide
@@ -3470,7 +3472,7 @@
     way to avoid using the builtin termcap.
 8   Xterm sends ^[[H for <Home> and ^[[F for <End> in some mode.  Also
     recognize these keys?  Mostly useful for xterm simulators, like gnometerm.
-    See http://dickey.his.com/xterm/xterm.faq.html#xterm_pc_style.
+    See https://invisible-island.net/xterm/xterm.faq.html#xterm_pc_style
 8   '[ and '] should be set to start/end of line when using a linewise operator
     (e.g., ":w").
 8   CTRL-A can't handle big "long" numbers, they become negative.  Check for
@@ -3759,8 +3761,8 @@
     What does MAXNGRAMSUGS do?
     Is COMPLEXPREFIXES necessary when we have flags for affixes?
 -   There is no Finnish spell checking file.  For openoffice Voikko is now
-    used, which is based on Malaga: http://home.arcor.de/bjoern-beutel/malaga/
-    (Teemu Likonen)
+    used, which is based on Malaga (link seems dead):
+    http://home.arcor.de/bjoern-beutel/malaga/ (Teemu Likonen)
 8   ":mkspell" still takes much too long in Hungarian dictionary from
     hunspell.  Only solution appears to be to postpone secondary suffixes.
 8   Handle postponed prefix with COMPOUNDPERMITFLAG or COMPOUNDFORBIDFLAG.
@@ -3816,7 +3818,7 @@
     syntax items (to add @Spell).
     Add ":syntax contains {pattern} add=@Spell" command?  A bit like ":syn
     cluster" but change the contains list directly for matching syntax items.
--   References: MySpell library (in OpenOffice.org).
+-   References: MySpell library (in OpenOffice.org), (links seem dead):
 	http://spellchecker.mozdev.org/source.html
 	http://whiteboard.openoffice.org/source/browse/whiteboard/lingucomponent/source/spellcheck/myspell/
       author: Kevin Hendricks <kevin.hendricks@sympatico.ca>
@@ -3974,8 +3976,9 @@
     could be entered.  E.g., for "f" command.  But not in Normal mode.  Sort
     of opposite of 'langmap'.  Use ":amap" command?
 -   When breaking a line, take properties of multibyte characters into
-    account.  The "linebreak" program from Bruno Haible can do it:
-    ftp://ftp.ilog.fr/pub/Users/haible/gnu/linebreak-0.1.tar.gz
+    account.  The "linebreak" program from Bruno Haible can do it, this
+    is now part of gnulib module unilbrk:
+    https://www.gnu.org/software/gnulib/MODULES.html
     But it's very complicated...
 -   Problem with 'langmap' being used on the rhs of a mapping. (Nikolai
     Weibull, 2008 May 14).
@@ -4773,10 +4776,10 @@
 		ctags -f $allTagsFile --fields=+aiKmnsSz --language-force=C++ --C++-kinds=+cefgmnpsut-dlux -u $files
 	www.vim.org script 1213 (Java Development Environment) (Fuchuan Wang)
 	IComplete: http://www.vim.org/scripts/script.php?script_id=1265
-	    and http://stud4.tuwien.ac.at/~e0125672/icomplete/
 	http://cedet.sourceforge.net/intellisense.shtml (for Emacs)
 	Ivan Villanueva has something for Java.
-	Emacs: http://www.xref-tech.com/xrefactory/more_c_completion.html
+	Emacs (link seems dead):
+	http://www.xref-tech.com/xrefactory/more_c_completion.html
 	Completion in .NET framework SharpDevelop: http://www.icsharpcode.net
 -   Pre-expand abbreviations, show which abbrevs would match?
 
diff --git a/runtime/doc/usr_01.txt b/runtime/doc/usr_01.txt
index fafb242..fdf1b53 100644
--- a/runtime/doc/usr_01.txt
+++ b/runtime/doc/usr_01.txt
@@ -1,4 +1,4 @@
-*usr_01.txt*	For Vim version 9.1.  Last change: 2023 May 12
+*usr_01.txt*	For Vim version 9.1.  Last change: 2024 May 11
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -165,7 +165,7 @@
 Moolenaar.  This material may be distributed only subject to the terms and
 conditions set forth in the Open Publication License, v1.0 or later.  The
 latest version is presently available at:
-	     http://www.opencontent.org/openpub/
+	     https://opencontent.org/openpub/
 
 People who contribute to the manuals must agree with the above copyright
 notice.