# \[AS3\] understanding

**URL:** <https://forum.kirupa.com/t/as3-understanding/238955>\
**Category:** flash\
**Created:** [September 17, 2007, 2:43pm UTC](https://forum.kirupa.com/t/as3-understanding/238955 "2007-09-17T14:43:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![onecommoncode](https://avatars.discourse-cdn.com/v4/letter/o/47e85d/32.png) [@onecommoncode](https://forum.kirupa.com/u/onecommoncode)\
**Post date:** [September 17, 2007, 2:43pm UTC](https://forum.kirupa.com/t/as3-understanding/238955/1 "2007-09-17T14:43:59Z")

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I have been reading up on AS 3 and looking at some of the tutorials and can’t seem to understand something. When I build sites in AS 2 I have a main class and most of my classes filter into the Main class. I rarely link a class to a MC in my library and instead just attach the MC in my class and reference the attached MC.

Now should I approach AS 3 the same way, or should the code be linked to a MC?