Sindbad~EG File Manager

typedef struct { term middle;   /* it's a bblocked term */
                  char left;
                  char right;
                  coord lh;     /* left height, offset of continuation char */
                  coord rh;     /* right height */
               } dline;
   /* if left or right is zero, it means no continuation on that side */

int layout(term,coord,coord,dline **,int *,coord *);