Fix hang when resizing in diff mode and there are concealed items.
diff --git a/runtime/doc/editing.txt b/runtime/doc/editing.txt
index 4d5b00f..9cbb14f 100644
--- a/runtime/doc/editing.txt
+++ b/runtime/doc/editing.txt
@@ -1414,6 +1414,9 @@
line to "/etc/magic", "/usr/share/misc/magic" or wherever your system has the
"magic" file: >
0 string VimCrypt~ Vim encrypted file
+ >9 string 01 - "zip" cryptmethod
+ >9 string 02 - "blowfish" cryptmethod
+
Notes:
- Encryption is not possible when doing conversion with 'charconvert'.