diff --git a/wiki/Manual1.wiki b/wiki/Manual1.wiki
index 344d1d4..eb648d6 100644
--- a/wiki/Manual1.wiki
+++ b/wiki/Manual1.wiki
@@ -112,6 +112,8 @@ In this example, a list of URLs is provided by the file list.txt. These urls are
 
 `$ ./ppss.sh -f list-of-urls.txt -c 'wget -q "$ITEM"'` -p 5
 
+*Tip*: please note that the double quotes around "$ITEM" may or may not be necessary depending on the situation. When using an input file with the -f option, they are often not necessary.
+
 *Advanced usage of the -c command option *
 
 Some commands require that you specify an output file. An example of such a command or program is the Lame mp3 encoder. Since the output file must be unique for each item, the output file name must be based on a variable. Like this:
@@ -259,4 +261,4 @@ PPSS skips items if an item log file is present in the Job_log directory. This a
 == Other things you should be aware of ==
 
 ppss.sh must be run inside a file system that support file locking. It
-can, however, the data to process can be in a non-locking file system.
+can, however, the data to process can be in a non-locking file system.
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