# Threads marked in bold

**URL:** https://forum.kirupa.com/t/threads-marked-in-bold/192357
**Category:** random
**Created:** [June 28, 2006, 2:14am UTC](https://forum.kirupa.com/t/threads-marked-in-bold/192357 "2006-06-28T02:14:53Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![kdd](https://avatars.discourse-cdn.com/v4/letter/k/ecb155/32.png) [@kdd](https://forum.kirupa.com/u/kdd)
#### Post date: [June 28, 2006, 2:14am UTC](https://forum.kirupa.com/t/threads-marked-in-bold/192357/1 "2006-06-28T02:14:53Z")

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I’ve always wondered how does the forum know that I have not seen some threads yet? And so that it then marks them in bold… How does it work?

Also, of course, I couldn’t have seen all the threads, but it mark only some threads in bold…  
Does it mark all the threads in bold between the time I left and came back? But what if I did not log out?