ications, for example.

   <P
></P
></P><UL
><LI
><P
>      
      <TT
CLASS="ENVAR"
>PGHOST</TT
> behaves the same as the <A
HREF="libpq-connect.html#LIBPQ-CONNECT-HOST"
>host</A
> connection parameter.
     </P
></LI
><LI
><P
>      
      <TT
CLASS="ENVAR"
>PGHOSTADDR</TT
> behaves the same as the <A
HREF="libpq-connect.html#LIBPQ-CONNECT-HOSTADDR"
>hostaddr</A
> connection parameter.
      This can be set instead of or in addition to <TT
CLASS="ENVAR"
>PGHOST</TT
>
      to avoid DNS lookup overhead.
  