# long field atoms for m4a

**URL:** <https://community.mp3tag.de/t/long-field-atoms-for-m4a/18601>\
**Category:** Support\
**Created:** [January 11, 2017, 10:56pm UTC](https://community.mp3tag.de/t/long-field-atoms-for-m4a/18601 "2017-01-11T22:56:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rajanna](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/r/dec6dc/32.png) [@rajanna](https://community.mp3tag.de/u/rajanna)\
**Post date:** [January 11, 2017, 10:56pm UTC](https://community.mp3tag.de/t/long-field-atoms-for-m4a/18601/1 "2017-01-11T22:56:58Z")

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Hello,

I understand m4a using atoms to store its tags. They are limited to 255 characters. But ©lyr is the only field that doesn't fall under this category.

I want to store long information, but not into lyrics. Could mp3tag, please implement a field maybe "©cml": comment long, which doesn't fall under the 255 character limit.

This will very useful to store the information into this field.

Thanks,  
Rajanna

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**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\
**Post date:** [February 9, 2026, 12:26pm UTC](https://community.mp3tag.de/t/long-field-atoms-for-m4a/18601/2 "2026-02-09T12:26:36Z")

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