SRL Archive - Help

Hey,
can someone tell me the best way to go about finding an object (using Pascal Reflection) either on the ground or on the wall? I'm very new to reflection, and the tutorials seem to be a little limited sadly.
Thanks

for items on the ground use: TReflectGroundItem
and for other objects use: TObjectType (ObjGame, ObjWallDecoration, ObjFloorDecoration, ObjBoundary: TObjectType)