If you are asking how to add the data from a previous query onto a newer query, it isn't as simple as adding two strings together. You have to write a new form element with the type "hidden", with a name consistant of your previous query, and the value consistant with the previous one. You can do this by hand, by using
CGI's
param method to get the data, and then printing the hidden element to the browser. Alternatively, you can do it by using modules to do the work for you.
CGI has a special "sticky" property that can be turned on; it will carry values with it from submission to submission. Also, you can try
CGI::BuildForm, which you might find easier to use. At either rate, good luck, and welcome to the monastery!
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