Knock, knock... anyone at home? Metaphorically for the transition into a new phase of life or the end: โNew doors are openingโ or โI'm leaving you!โ My door is always open for you, you are ready to talk or you close the door behind you forever.
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Emoji History
Development of the emoji in the Unicode lexicon
First included
The emoji โDoorโ was approved as part of Unicode 6.0 in 2010 and added to Emoji 0.6.