# How to write special characters in %track% **URL:** https://community.mp3tag.de/t/how-to-write-special-characters-in-track/55691 **Category:** Support **Created:** [December 31, 2021, 11:34pm UTC](https://community.mp3tag.de/t/how-to-write-special-characters-in-track/55691 "2021-12-31T23:34:05Z") **Posts on this page:** 1 **Showing post:** 6
### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino) #### Post date: [January 2, 2022, 7:31am UTC](https://community.mp3tag.de/t/how-to-write-special-characters-in-track/55691/6 "2022-01-02T07:31:19Z")
I think I remember this thread: > [@\[F\] MP3Tag's use of Unicode in TLEN field is not ID3V2.3 compliant](https://community.mp3tag.de/t/f-mp3tags-use-of-unicode-in-tlen-field-is-not-id3v2-3-compliant/9209): > > MP3Tag uses Unicode when writing the TLEN field. However, at [http://www.id3.org/id3v2.3.0#sec3.3](http://www.id3.org/id3v2.3.0#sec3.3) it says explicitly: This seem pretty conclusive. This has become significant because of Microsoft's recent "security update" KB968816, which no longer permits (non-compliant) Unicode for TLEN, and now refuses to play such files. More details here: [http://www.microsoft.com/communities/newsg...78-39d7b355910b](http://www.microsoft.com/communities/newsgroups/en-us/default.aspx?dg=microsoft.public.windowsxp.music&tid=93b45385-c345-4fd9-9b54-a35c4a8f6d0f&cat=&lang=&cr=&sloc=&p=1&mid=e7311eeb-04aa-4009-a078-39d7b355910b) and here: [http://www.microsoft.com/communities/newsg...amp;m=1&p=1](http://www.microsoft.com/communities/newsgroups/list/en-us/default.aspx?dg=microsoft.public.windowsmedia.player&tid=3216f2df-39eb-4536-b4a2-b59a5f00dc60&cat=en_us_b80c408d-117a-4d9c-9ba5-55785432b592&lang=en&cr=us&sloc=en-us&m=1&p=1) and here: [/t/9208/1](https://community.mp3tag.de/t/9208/1) … so, if you add anything non-numeric in TRACK and that is a special character then you have the trouble of writing it in the correct codepage. --- _[View the full topic](https://community.mp3tag.de/t/how-to-write-special-characters-in-track/55691)._