In this note I will tell you, how to make your browser display manpage when you type man perl in its address bar. L:all

Chrome

Go to Settings → General → Default search → Manage → Add, then input:

• name: man;
• keyword: man;
• url: http://www.opennet.ru/man.shtml?topic=%s

After you do it, you can type man perl just in address bar, the relevant manpage will be shown.

Opera

Go to http://opennet.ru/man.shtml, right-click on «Тема» search field, then "Create search". Type man in "Key" field and press OK. Input man perl in address bar to check.