diff --git a/runtime/doc/editing.txt b/runtime/doc/editing.txt
index 1d104bc..a1d0e14 100644
--- a/runtime/doc/editing.txt
+++ b/runtime/doc/editing.txt
@@ -1,4 +1,4 @@
-*editing.txt*   For Vim version 7.4.  Last change: 2016 Jan 03
+*editing.txt*   For Vim version 7.4.  Last change: 2016 Jan 17
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -639,6 +639,7 @@
 				:0argadd x	x a b c
 				:1argadd x	a x b c
 				:$argadd x	a b c x
+			And after the last one:
 				:+2argadd y	a b c x y
 			There is no check for duplicates, it is possible to
 			add a file to the argument list twice.
@@ -1458,6 +1459,16 @@
 When writing an undo file, the same key and method will be used for the text
 in the undo file. |persistent-undo|.
 
+To test for blowfish support you can use these conditions: >
+	has('crypt-blowfish')
+	has('crypt-blowfish2')
+This works since Vim 7.4.1099 while blowfish support was added earlier.
+Thus the condition failing doesn't mean blowfish is not supported. You can
+test for blowfish with: >
+	v:version >= 703
+And for blowfish2 with: >
+	v:version > 704 || (v:version == 704 && has('patch401'))
+<
 						*E817* *E818* *E819* *E820*
 When encryption does not work properly, you would be able to write your text
 to a file and never be able to read it back.  Therefore a test is performed to