What are the benefits of using a content management system (CMS) for managing a website? Your response should contain at least 3 placeholders represented by square brackets, such as [website]. Include keywords [CMS], [efficiency], and [flexibility] in the response. In your response, the word [CMS] should appear at least 3 times. At the end of your response, please explicitly add a postscript starting with [P.S.].
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