extern Bitmap pix[];
extern Bitmap pix_masked[], tile_masked[];
extern Pixmap clipmask[], tile_clipmask[];
extern DrawBuffer drawto, drawto_field, backbuffer, fieldbuffer;
extern Bitmap pix[];
extern Bitmap pix_masked[], tile_masked[];
extern Pixmap clipmask[], tile_clipmask[];
extern DrawBuffer drawto, drawto_field, backbuffer, fieldbuffer;