The question mark character (?) allows one occurrence of any character. For example, if you enter the source file name as

a?b.txt

, the Secure Agent reads data from files with the following names:

a1b.txt
a2b.txt
aab.txt
acb.txt

The asterisk mark character (*) allows zero or more than one occurrence of any character. If you enter the source file name as

a*b.txt

, the Secure Agent reads data from files with the following names:

aab.txt
a1b.txt
ab.txt
abc11b.txt