[NTG-context] Absolute positioning of graphics on the page

Is this possible without using layers? IOW, it there some kind of command that allows: \somecommand[some setups]{content} where the setups specify where the content should be positioned, and towards where it should extend? (e.g., positioned in the top right corner, extending to the bottom left) This can be achieved via layers, but is it possible without? -- Giuseppe "Oblomov" Bilotta