if((p
= lookup(arg(n
)))==0)
if((p
= lookup(""))==0) diag("Software error");
if(dt
->dswitch
>=0 && comp(s
,&dt
->dident
)) return(dt
);
if(p
= lookup(arg(n
))) if(p
>d0
+2) {
for(;p
->word
!=0;p
=+r
->word
) {
while((t
= q
->word
)!=0) {
if(q
<d0
|| q
>dmax
) diag("Software error");
while(count
-->0) *to
++ = *from
++;