[exoplatform] Call to groovy templates

[Cédric TRAN-XUAN <cedric.tran-xuan@xxxxxxxx>]

Hi all,
First of all best wishes and happy new year to everybody!
Java classes call groovy templates through the annotation 
@ComponentConfig  but does anyone know the differences between :

template = "app:/groovy/portal/webui/component/UIIFramePortlet.gtmpl"

and

template = "system:/groovy/portal/webui/component/UIIFramePortlet.gtmpl"

So, what is the difference between "app:" and "system:" and which other 
values can we have?

Regards,

Cédric.