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TLDR

or tldr, TL;DR, tl;dr

  1. too long; didn’t read: used in response to an online post, text message, article, etc., that is thought to be too lengthy, and usually taken as a rude comment, or used by the writer before a summary of lengthy text.
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Origin of TLDR

First recorded in 2000–05; from its use in digital communications
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Contemporary Examples of tldr