What is this Path code doing?

Question

I am looking at some example code for Expanding Item Renders in Datagrid and I don't understand the line of code below:

Path data="M 0 0 L 8 0 L 4 6 L 0 0 Z" 

I know it is defining the path used to define the triangle graphic but I don't understand how it is doing that. I've tried fiddling with the data but it still isn't making sense. Can anyone shed some light on what this line is doing?

---

<s:Path data="M 0 0 L 8 0 L 4 6 L 0 0 Z" 
        top="3" left="3" rotation.up="-90" rotation="-90" 
        rotation.upAndSelected="0" rotation.overAndSelected="0" 
        rotation.downAndSelected="0">
    <s:fill>
        <s:SolidColor color="0x999999" color.over="0x000000" color.overAndSelected="0x000000" />
    </s:fill>
</s:Path>

Answer 1

Ok, so digging around a bit after the tip from @DodgerThud I found the documentation for defining paths in mxml