Rename w_p_conceal to w_p_conc for consistency.
diff --git a/runtime/doc/mlang.txt b/runtime/doc/mlang.txt
index d7127da..d122521 100644
--- a/runtime/doc/mlang.txt
+++ b/runtime/doc/mlang.txt
@@ -58,8 +58,10 @@
The locale {name} must be a valid locale on your
system. Some systems accept aliases like "en" or
"en_US", but some only accept the full specification
- like "en_US.ISO_8859-1".
- With the "messages" argument the language used for
+ like "en_US.ISO_8859-1". On Unix systems you can use
+ the this command to see what locales are supported: >
+ :!locale -a
+< With the "messages" argument the language used for
messages is set. This can be different when you want,
for example, English messages while editing Japanese
text. This sets $LC_MESSAGES.