munin-node apache_ with basic authentication - please be more specific

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http://serverfault.com – Can someone please explain this to me: In this answer: munin-node apache_ with basic authentication there is a line saying: If you need authenticated access to the URL you can specify the username and password in the URL. For example: [apache_volume] http://munin:spamalot@localhost/server-status?auto> I do not understand this. If for example username is xxxx and pasword is yyyy how would I change the: http://munin:spamalot@localhost/server-status?auto> to corespond to username xxxx and password yyyy???? Thanks for help! (HowTos)