roff_block_alloc
roff_block_alloc(man, line, ppos, tok);
roff_block_alloc(man, line, ppos, tok);
roff_block_alloc(mdoc, line, ppos, tok);
roff_block_alloc(mdoc, nchild->line, nchild->pos, MDOC_It);
struct roff_node *roff_block_alloc(struct roff_man *, int, int, int);