struct cons_pointer authorised(struct cons_pointer target, struct cons_pointer acl)
TODO: does nothing, yet.
#define nilp(conspoint)
true if conspoint points to the special cell NIL, else false (there should only be one of these so it...
#define TRUE
a cons pointer which points to the special T cell
#define pointer2cell(pointer)
given a cons_pointer as argument, return the cell.
An indirect pointer to a cons cell.