--- a/runtime/doc/change.txt
+++ b/runtime/doc/change.txt
@@ -1,4 +1,4 @@
-*change.txt*    For Vim version 7.0d.  Last change: 2006 Apr 09
+*change.txt*    For Vim version 7.0d.  Last change: 2006 Apr 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1508,7 +1508,7 @@ Vim has a sorting function and a sorting
 found here: |sort()|.
 
 							*:sor* *:sort*
-:[range]sor[t][!] [i][u][n][x][o] [/{pattern}/]
+:[range]sor[t][!] [i][u][r][n][x][o] [/{pattern}/]
 			Sort lines in [range].  When no range is given all
 			lines are sorted.
 
@@ -1517,24 +1517,25 @@ found here: |sort()|.
 			With [i] case is ignored.
 
 			With [n] sorting is done on the first decimal number
-			in the line (after a {pattern} match).
+			in the line (after or inside a {pattern} match).
 
 			With [x] sorting is done on the first hexadecimal
-			number in the line (after a {pattern} match).  A
-			leading "0x" or "0X" is ignored.
+			number in the line (after or inside a {pattern}
+			match).  A leading "0x" or "0X" is ignored.
 
 			With [o] sorting is done on the first octal number in
-			the line (after a {pattern} match).
+			the line (after or inside a {pattern} match).
 
 			With [u] only keep the first of a sequence of
 			identical lines (ignoring case when [i] is used).
+			Without this flag, a sequence of identical lines
+			will be kept in their original order.
 			Note that leading and trailing white space may cause
 			lines to be different.
 
-			When /{pattern}/ is specified the text matched with
-			{pattern} is skipped, so that you sort on what comes
-			after the match.  For lines without a match sorting
-			starts in the first column (e.g., for empty lines).
+			When /{pattern}/ is specified and there is no [r] flag
+			the text matched with {pattern} is skipped, so that
+			you sort on what comes after the match.
 			Instead of the slash any non-letter can be used.
 			For example, to sort on the second comma-separated
 			field: >
@@ -1545,7 +1546,21 @@ found here: |sort()|.
 <			To sort on the first number in the line, no matter
 			what is in front of it: >
 				:sort /.*\ze\d/
-<
+
+<			With [r] sorting is done on the matching {pattern}
+			instead of skipping past it as described above.
+			For example, to sort on only the first three letters
+			of each line: >
+				:sort /\a\a\a/ r
+
+<			If a {pattern} is used, any lines which don't have a
+			match for {pattern} are kept in their current order,
+			but separate from the lines which do match {pattern}.
+			If you sorted in reverse, they will be in reverse
+			order after the sorted lines, otherwise they will be
+			in their original order, right before the sorted
+			lines.
+
 Note that using ":sort" with ":global" doesn't sort the matching lines, it's
 quite useless.
 
@@ -1553,8 +1568,8 @@ The details about sorting depend on the 
 guarantee that sorting is "stable" or obeys the current locale.  You will have
 to try it out.
 
-The sorting itself cannot be interrupted, because of using a system library
-function.  You can interrupt the preparation (for undo) and putting the sorted
-lines into the buffer.  In the last case you may end up with duplicated lines.
+The sorting can be interrupted, but if you interrupt it too late in the
+process you may end up with duplicated lines.  This also depends on the system
+library function used.
 
  vim:tw=78:ts=8:ft=help:norl: