OF_open
OF_stdout = OF_open("screen");
OF_stdin = OF_open("keyboard");
OF_stdout = OF_open("screen");
stdout = OF_open("screen");
OF_fd = OF_open(bootpath);
if ((handle = OF_open(fname)) == -1) {
int OF_open(char *dname);
sr_handle = OF_open(bc_dip->path);
ihandle = OF_open(dip->path);
if ((ihandle = OF_open(fname)) == -1) {
u_int OF_open(char *dname);
ihandle = OF_open(dip->path);
int OF_open(char *dname);