Thanks for the reply In the __DATA__ there are two files. ^C^D^V^V^A is the start of file. In each file how to check if the tag is duplicate.
For example: in first file: {DATE} and {SECTION} is twice. So i have to print only {DATE} and {SECTION} as multiple. Please tell me how can I find out?

In reply to Re^2: remove duplicate tags by Anonymous Monk
in thread remove duplicate tags by Anonymous Monk

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