[Therion] How to frame a box?

Hi I'm wondering if it's possible to draw a frame around e.g. a legendbox or any other box? (I'm not talking about the frame around all the map which you can get with e.g. \framethickness=1mm) In layout I'm using code like this: \def\maplayout{ ... \legendbox{0}{0}{NE}{\legendsymbols} \legendbox{0}{0}{NE}{\the\legendcontent} ... } Is it possible in any way to draw a frame around such a box? Or does anyone have any code to get a framed box on the map? Thanks for your help. cheers, Torsten