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Hi, All: I have some information stored in the database. When I try to show them, sometimes it give me the following warning: Warning: printf(): Too few arguments ... Here is the problematic code: printf("<textarea COLS=56 ROWS=7 name=\"description\">$des</textarea> <br>"); I figured out that if there are "%" in the string $des, it will give me this warning. But I want to show "%" in the textarea. How can I do that? Further, how to do the input filtering? Are there any modules that I can use? Thanks in advance for any help. Zhan Xu EECS Department Case Western Reserver University Email: zxx10@cwru.edu