bmd_linec
struct bmd_linec *bl_next;
struct bmd_linec *bl_prev;
struct bmd_linec *bc_bl;
struct bmd_linec bmd_linec[52];
struct bmd_linec *bq = bp->bc_bl;
struct bmd_linec *bq = bp->bc_bl;
struct bmd_linec *bq;
bmd_linec[i].bl_next = &bmd_linec[i+1];
bmd_linec[i].bl_prev = &bmd_linec[i-1];
bmd_linec[bp->bc_ymax-1].bl_next = &bmd_linec[bp->bc_ymin];
bmd_linec[bp->bc_ymin].bl_prev = &bmd_linec[bp->bc_ymax-1];
bq = bp->bc_bl = &bmd_linec[bp->bc_ymin];
struct bmd_linec *bq = bp->bc_bl;
struct bmd_linec *bq = bp->bc_bl;