# What code format is \[XYZ("abc")\]

**URL:** <https://forum.kirupa.com/t/what-code-format-is-xyz-abc/310073>\
**Category:** flash\
**Created:** [May 31, 2010, 10:48pm UTC](https://forum.kirupa.com/t/what-code-format-is-xyz-abc/310073 "2010-05-31T22:48:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kadaj](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/kadaj/32/9061_2.png) [@kadaj](https://forum.kirupa.com/u/kadaj)\
**Post date:** [May 31, 2010, 10:48pm UTC](https://forum.kirupa.com/t/what-code-format-is-xyz-abc/310073/1 "2010-05-31T22:48:46Z")

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What kind of programming methodology is this, with square brackets?  
eg:  
[ResourceBundle(“textLayout”)]  
[Style(name=“buttonStyleName”, type=“String”, inherit=“no”)]

You can see these in flex sdk source. The style means css. But why would one write like this?