where to find standard component to be reused in Web Dynpro?

Hi everyone,

Currently, I need to develop some web dynpro applications and the layout design has been finished.

e.g. on one of the page, there will be a navigation bar on the top of the page, and context manue laid

on the right of the screen , and a side car laid on the right.

So, I believe this kind of component usually used has already been implemented by SAP, where can I

find them? in what package they are?

Thanks in advance.