# Need Help: Undocumented Classes

**URL:** <https://forum.kirupa.com/t/need-help-undocumented-classes/68405>\
**Category:** flash\
**Created:** [October 25, 2004, 6:03pm UTC](https://forum.kirupa.com/t/need-help-undocumented-classes/68405 "2004-10-25T18:03:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![gahook](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@gahook](https://forum.kirupa.com/u/gahook)\
**Post date:** [October 25, 2004, 6:03pm UTC](https://forum.kirupa.com/t/need-help-undocumented-classes/68405/1 "2004-10-25T18:03:00Z")

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Hi all,  
Do anyone know how to use this class, mx.transitions.Zoom?

Acutally, there are lots of these undocumented classes. Do anyone know how to use them?

This can be found under C:\Program Files\Macromedia\Flash MX 2004[lang]\First Run\Classes.

Thanks,  
Gahook Cheung