import 4.code.about;

class Header {

public void title() {

String fullTitle = '/wsr/';
}

public void menu();

public void board();

public void goToBottom();

}
class Thread extends Board {
public void Chegg(OP Anonymous) {

String fullTitle = 'Chegg';
int postNumber = 1458099;
String image = '1714013389915973.jpg';
String date = '04/24/24(Wed)22:49:49';
String comment = 'Anyone wanna send the answers to this chegg link: https://www.chegg.com/homework-help/questions-and-answers/7-filtering-intuition-time-impulse-response-filter-defined--h-t-sin-pi-t-pi-t-t-0-1-t-0-de-q166786710';

}
public void comments() { }
}

class Navigation {
public void backToTop();
}