自訂屬性設計意念：自訂屬性右方備註預設值或建議的輸入值。由爬梯和人籠分開的欄位，就不會感覺到要輸入的值太多。
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Complete the course to unlock the certificate
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This will remove your completed lessons, quizzes, and assignments. You will start the course from the beginning.