An introduction to using attributes and local variables in Houdini. Covers 

    different types of attribute : vertex, point, primitive and detail.

    When attributes and variables can be used, and when not.

    Vector vs 3 value float attributes.

    Converting between point and detail attributes etc.

*NOTE* The tutorial fails to mention one further difference between vector and 3 component float attributes. The video correctly says that for 3 component float attributes local variables are of the form $MYVAR1, $MYVAR2, $MYVAR3. It does not say that for Vector attributes the variables are $MYVECX, $MYVECY, $MYVECZ

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