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Submitted URL: http://www.britannica.com/EBchecked/topic/287895/information-system/218054/Operational-support-and-enterprise-systems
Effective URL: https://www.britannica.com/topic/information-system
Submission: On October 04 via manual from US
Effective URL: https://www.britannica.com/topic/information-system
Submission: On October 04 via manual from US
DOM tree The "DOM" is the Document Object Model