Means what is the limit of Query String ???
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The Internet Explorer versions 5 and 6 that I tested only allowed up to 2,047 characters while Netscape Navigator version 4 seemed to be able to handle up to 30,000 and I couldn't get version 6 much past 9,000.
Before you start thinking that 2,047 is a lot, it's not like you can go ahead and use all of those characters. That limit is even less once you deduct the address of your site, the path to the requested file, and even the requested file name.
Hope this will help U!