diff --git a/9-logging.dat.md b/9-logging.dat.md
index a352488..0d11a25 100644
--- a/9-logging.dat.md
+++ b/9-logging.dat.md
@@ -1 +1,5 @@
-both logfile and keys.dat are located in the subdir mentioned after you use menu FILE / MANAGE KEYS . 
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+both logfile and keys.dat are located in the subdir mentioned after you use menu FILE / MANAGE KEYS . 
+
+see also:
+
+ * [https://bitmessage.org/forum/index.php/topic,4820.msg11163.html#msg11163](https://bitmessage.org/forum/index.php/topic,4820.msg11163.html#msg11163)
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