--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt*	For Vim version 8.2.  Last change: 2022 Jan 22
+*builtin.txt*	For Vim version 8.2.  Last change: 2022 Jan 28
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -2086,6 +2086,22 @@ exists({expr})	The result is a Number, w
 		For checking if a file exists use |filereadable()|.
 
 		The {expr} argument is a string, which contains one of these:
+			varname		internal variable (see
+			dict.key	|internal-variables|).  Also works
+			list[i]		for |curly-braces-names|, |Dictionary|
+			import.Func	entries, |List| items, imported
+					items,etc.
+					Does not work for local variables in a
+					compiled `:def` function.
+					Beware that evaluating an index may
+					cause an error message for an invalid
+					expression.  E.g.: >
+					   :let l = [1, 2, 3]
+					   :echo exists("l[5]")
+<					   0 >
+					   :echo exists("l[xx]")
+<					   E121: Undefined variable: xx
+					   0
 			&option-name	Vim option (only checks if it exists,
 					not if it really works)
 			+option-name	Vim option that works.
@@ -2100,21 +2116,6 @@ exists({expr})	The result is a Number, w
 			?funcname	built-in function that could be
 					implemented; to be used to check if
 					"funcname" is valid
-			varname		internal variable (see
-					|internal-variables|).  Also works
-					for |curly-braces-names|, |Dictionary|
-					entries, |List| items, etc.
-					Does not work for local variables in a
-					compiled `:def` function.
-					Beware that evaluating an index may
-					cause an error message for an invalid
-					expression.  E.g.: >
-					   :let l = [1, 2, 3]
-					   :echo exists("l[5]")
-<					   0 >
-					   :echo exists("l[xx]")
-<					   E121: Undefined variable: xx
-					   0
 			:cmdname	Ex command: built-in command, user
 					command or command modifier |:command|.
 					Returns:
@@ -2539,7 +2540,7 @@ flatten({list} [, {maxdepth}])					*flat
 		The {list} is changed in place, use |flattennew()| if you do
 		not want that.
 		In Vim9 script flatten() cannot be used, you must always use
-		|flattennew()|.
+		|flattennew()|. *E1158*
 								*E900*
 		{maxdepth} means how deep in nested lists changes are made.
 		{list} is not modified when {maxdepth} is 0.
@@ -6540,7 +6541,7 @@ reduce({object}, {func} [, {initial}])		
 		{func} is called for every item in {object}, which can be a
 		|String|, |List| or a |Blob|.  {func} is called with two
 		arguments: the result so far and current item.  After
-		processing all items the result is returned.
+		processing all items the result is returned. *E1132*
 
 		{initial} is the initial result.  When omitted, the first item
 		in {object} is used and {func} is first called for the second
@@ -7399,7 +7400,7 @@ setcellwidths({list})					*setcellwidths
 		   setcellwidths([[0xad, 0xad, 1],
 				\ [0x2194, 0x2199, 2]])
 
-<					*E1109* *E1110* *E1111* *E1112* *E1113*
+<				*E1109* *E1110* *E1111* *E1112* *E1113* *E1114*
 		The {list} argument is a list of lists with each three
 		numbers. These three numbers are [low, high, width].  "low"
 		and "high" can be the same, in which case this refers to one