# How do I achieve this masking effect?

**URL:** <https://forum.kirupa.com/t/how-do-i-achieve-this-masking-effect/159838>\
**Category:** flash\
**Created:** [August 20, 2005, 10:35pm UTC](https://forum.kirupa.com/t/how-do-i-achieve-this-masking-effect/159838 "2005-08-20T22:35:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![HecticMedia](https://avatars.discourse-cdn.com/v4/letter/h/e99b99/32.png) [@HecticMedia](https://forum.kirupa.com/u/HecticMedia)\
**Post date:** [August 20, 2005, 10:35pm UTC](https://forum.kirupa.com/t/how-do-i-achieve-this-masking-effect/159838/1 "2005-08-20T22:35:43Z")

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Hey All,

I’ve seen stuff like this before and have always wanted to know how to do it… I know he uses the shape tween instead of motion, but I can’t seem to replicate it… can anyone help me?

Look in the main window (the yellow one) the way the mask kinda drapes down revealing the content… [http://www.clgd.net/](http://www.clgd.net/)

Thanks in advance!

Ben