vzdump.adoc: add note that values can be specified on command line

diff --git a/vzdump.adoc b/vzdump.adoc
index d9ccfe6adc4c45cfef8864217d02c5a0a99cc8d3..231b49b8d08eadd61aecbf023335d44fcded92c1 100644 (file)
--- a/vzdump.adoc
+++ b/vzdump.adoc
@@ -121,7 +121,9 @@ format:
  OPTION: value
 
 Blank lines in the file are ignored, and lines starting with a '#'
-character are treated as comments and are also ignored.
+character are treated as comments and are also ignored. Values from
+this file are used as default, and can be overwritten on the command
+line.
 
 We currently support the following options: