diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 6b77d44..c4e7d36 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt*	For Vim version 9.1.  Last change: 2024 Jul 16
+*builtin.txt*	For Vim version 9.1.  Last change: 2024 Jul 17
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -6947,10 +6947,10 @@
 matchaddpos({group}, {pos} [, {priority} [, {id} [, {dict}]]])
 		Same as |matchadd()|, but requires a list of positions {pos}
 		instead of a pattern. This command is faster than |matchadd()|
-		because it does not require to handle regular expressions and
-		sets buffer line boundaries to redraw screen. It is supposed
-		to be used when fast match additions and deletions are
-		required, for example to highlight matching parentheses.
+		because it does not handle regular expressions and it sets
+		buffer line boundaries to redraw screen. It is supposed to be
+		used when fast match additions and deletions are required, for
+		example to highlight matching parentheses.
 
 		{pos} is a list of positions.  Each position can be one of
 		these:
@@ -10334,8 +10334,8 @@
 
 split({string} [, {pattern} [, {keepempty}]])			*split()*
 		Make a |List| out of {string}.  When {pattern} is omitted or
-		empty each white-separated sequence of characters becomes an
-		item.
+		empty each white space separated sequence of characters
+		becomes an item.
 		Otherwise the string is split where {pattern} matches,
 		removing the matched characters. 'ignorecase' is not used
 		here, add \c to ignore case. |/\c|
diff --git a/runtime/doc/channel.txt b/runtime/doc/channel.txt
index f294679..c1fae51 100644
--- a/runtime/doc/channel.txt
+++ b/runtime/doc/channel.txt
@@ -1,4 +1,4 @@
-*channel.txt*      For Vim version 9.1.  Last change: 2024 Jun 13
+*channel.txt*      For Vim version 9.1.  Last change: 2024 Jul 17
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -981,8 +981,9 @@
 		invoked.
 
 		{command} can be a String.  This works best on MS-Windows.  On
-		Unix it is split up in white-separated parts to be passed to
-		execvp().  Arguments in double quotes can contain white space.
+		Unix it is split up in white space separated parts to be
+		passed to execvp().  Arguments in double quotes can contain
+		white space.
 
 		{command} can be a List, where the first item is the executable
 		and further items are the arguments.  All items are converted
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index eddafd0..b921cb5 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 9.1.  Last change: 2024 Jun 01
+*eval.txt*	For Vim version 9.1.  Last change: 2024 Jul 17
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -3124,9 +3124,10 @@
 				let lconst[0] = 2  " Error!
 				let lconst[1][0] = 'b'  " OK
 <							*E995*
-			|:const| does not allow to for changing a variable: >
+			It is an error to specify an existing variable with
+			:const. >
 				:let x = 1
-				:const x = 2  " Error!
+				:const x = 1  " Error!
 <							*E996*
 			Note that environment variables, option values and
 			register values cannot be used here, since they cannot
diff --git a/runtime/doc/gui.txt b/runtime/doc/gui.txt
index 3b55919..071de9c 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 11
+*gui.txt*       For Vim version 9.1.  Last change: 2024 Jul 17
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -970,7 +970,7 @@
 
 5.7 Examples for Menus					*menu-examples*
 
-Here is an example on how to add menu items with menu's!  You can add a menu
+Here is an example on how to add menu items with menus.  You can add a menu
 item for the keyword under the cursor.  The register "z" is used. >
 
   :nmenu Words.Add\ Var		wb"zye:menu! Words.<C-R>z <C-R>z<CR>
diff --git a/runtime/doc/quickfix.txt b/runtime/doc/quickfix.txt
index ed99978..d759c18 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 Jul 15
+*quickfix.txt*  For Vim version 9.1.  Last change: 2024 Jul 17
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1092,8 +1092,8 @@
 
 :vim[grep][!] {pattern} {file} ...
 			Like above, but instead of enclosing the pattern in a
-			non-ID character use a white-separated pattern.  The
-			pattern must start with an ID character.
+			non-ID character use a white space separated pattern.
+			The pattern must start with an ID character.
 			Example: >
 				:vimgrep Error *.c
 <
diff --git a/runtime/doc/testing.txt b/runtime/doc/testing.txt
index ebf562b..47ae85a 100644
--- a/runtime/doc/testing.txt
+++ b/runtime/doc/testing.txt
@@ -1,4 +1,4 @@
-*testing.txt*	For Vim version 9.1.  Last change: 2024 Jun 17
+*testing.txt*	For Vim version 9.1.  Last change: 2024 Jul 17
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -506,16 +506,17 @@
 		added to |v:errors| and 1 is returned.  Otherwise zero is
 		returned. |assert-return|
 		The error is in the form "Expected {expected} but got
-		{actual}".  When {msg} is present it is prefixed to that.
+		{actual}".  When {msg} is present it is prefixed to that, along
+		with the location of the assert when run from a script.
 
 		There is no automatic conversion, the String "4" is different
 		from the Number 4.  And the number 4 is different from the
 		Float 4.0.  The value of 'ignorecase' is not used here, case
 		always matters.
 		Example: >
-	assert_equal('foo', 'bar')
-<		Will result in a string to be added to |v:errors|:
-	test.vim line 12: Expected 'foo' but got 'bar' ~
+			call assert_equal('foo', 'bar', 'baz')
+<		Will add the following to |v:errors|:
+			test.vim line 12: baz: Expected 'foo' but got 'bar' ~
 
 		Can also be used as a |method|, the base is passed as the
 		second argument: >
@@ -599,7 +600,8 @@
 		When {actual} is not false an error message is added to
 		|v:errors|, like with |assert_equal()|.
 		The error is in the form "Expected False but got {actual}".
-		When {msg} is present it is prepended to that.
+		When {msg} is present it is prepended to that, along
+		with the location of the assert when run from a script.
 		Also see |assert-return|.
 
 		A value is false when it is zero. When {actual} is not a
@@ -625,7 +627,8 @@
 		When {pattern} does not match {actual} an error message is
 		added to |v:errors|.  Also see |assert-return|.
 		The error is in the form "Pattern {pattern} does not match
-		{actual}".  When {msg} is present it is prefixed to that.
+		{actual}".  When {msg} is present it is prefixed to that,
+		along with the location of the assert when run from a script.
 
 		{pattern} is used as with |=~|: The matching is always done
 		like 'magic' was set and 'cpoptions' is empty, no matter what
@@ -636,7 +639,7 @@
 		Use both to match the whole text.
 
 		Example: >
-	assert_match('^f.*o$', 'foobar')
+			assert_match('^f.*o$', 'foobar')
 <		Will result in a string to be added to |v:errors|:
 	test.vim line 12: Pattern '^f.*o$' does not match 'foobar' ~
 
@@ -693,7 +696,8 @@
 		Also see |assert-return|.
 		A value is TRUE when it is a non-zero number.  When {actual}
 		is not a number the assert fails.
-		When {msg} is given it precedes the default message.
+		When {msg} is given it precedes the default message, along
+		with the location of the assert when run from a script.
 
 		Can also be used as a |method|: >
 			GetResult()->assert_true()
diff --git a/runtime/doc/various.txt b/runtime/doc/various.txt
index 1ce8927..acd7991 100644
--- a/runtime/doc/various.txt
+++ b/runtime/doc/various.txt
@@ -1,4 +1,4 @@
-*various.txt*   For Vim version 9.1.  Last change: 2024 Jun 17
+*various.txt*   For Vim version 9.1.  Last change: 2024 Jul 17
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -19,9 +19,8 @@
 							*:redr* *:redraw*
 :redr[aw][!]		Redraw the screen right now.  When ! is included it is
 			cleared first.
-			Useful to update the screen halfway executing a script
-			or function.  Also when halfway a mapping and
-			'lazyredraw' is set.
+			It can be used to redraw the screen in a script
+			or function (or a mapping if |'lazyredraw'| is set).
 
 						*:redraws* *:redrawstatus*
 :redraws[tatus][!]	Redraw the status line of the current window.  When !