VML coordsize and shape style width and height

I want to know about VML coordsize. i referred the below link.

http://msdn.microsoft.com/en-us/library/bb263837(v=vs.85).aspx

but i didn't get any idea from this. because please refer below code

<v:shapestyle="POSITION: absolute;LEFT:0px;TOP:0px;"coordsize="1000,1000"fillcolor="white"strokecolor="#b7b7b7"strokeweight=".5pt"path=" m89,410 l89,58 m139,410 l139,58 m188,410 l188,58 m237,410 l237,58 m286,410 l286,58 m335,410 l335,58 m384,410 l384,58 m433,410 l433,58 m482,410 l482,58 m531,410 l531,58 e"></v:shape>

i don't know how the coordsize is 1000,1000 . we didn't set explicitly it just automatically updated in that element. i want to know how this calculated automatically. and also above shape is not showing with out setting width and height to "1000px" same as coordsize. why?

Thanks,

Siva

siva