# Datatype syntax

**URL:** <https://forum.kirupa.com/t/datatype-syntax/325273>\
**Category:** flash\
**Created:** [October 6, 2011, 10:20am UTC](https://forum.kirupa.com/t/datatype-syntax/325273 "2011-10-06T10:20:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jeancnicolas](https://avatars.discourse-cdn.com/v4/letter/j/7bcc69/32.png) [@jeancnicolas](https://forum.kirupa.com/u/jeancnicolas)\
**Post date:** [October 6, 2011, 10:20am UTC](https://forum.kirupa.com/t/datatype-syntax/325273/1 "2011-10-06T10:20:11Z")

</div>

hiy’all

I have a ref to an object in the library

```auto
var ballClass:Class = Ball;

```

then later on populating it like so:

```auto
var obj:* = new ballClass();

```

what does this

```auto
:*

```

mean?

…///!