A group of programmers created a website on the Internet. Whenever any user clicked on the website address, a program that erases browsing history is launched. In this scenario, the programmers created a .

to change your username, you must:

1) make sure what the username you want to change to is allowed in this community

2) contact a administrator (for example, jaysl)

3) through pm, tell the admin what you want to change to

4) if the username is allowed, it will be changed in a matter of seconds (minutes at most)

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b and c ( ip address and port number)