Query strings?

Hey,
I'm fairly new to html and web design, but I'm wondering: why does Muse add query strings on every static resource url? There must be a reason I don't understand, but removing them all manually works, thus my question.
Thx in advance for the answers.
Alucryd

Static HTML/CSS/JS is most often cached in the browser. These strings prevent that caching.
explained:
http://guyellisrocks.com/coding/automatically-keeping-css-file-current-on-any-web-page/
Removing the strings is not ideal if you intend to update the page later.

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