Improve description of autocommit behavior in ecpg manual pages.

doc/src/sgml/ecpg.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ecpg.sgml,v 1.33 2002/01/07 02:29:11 petere Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ecpg.sgml,v 1.34 2002/01/18 20:32:53 momjian Exp $
 -->
 
  <chapter id="ecpg">
@@ -1053,14 +1053,16 @@ ECPGdo(__LINE__, NULL, "select  res  from mytable where index = ?     ",
     </para>
 
     <para>
-     All <acronym>SQL</acronym> statements are performed in one
-     transaction unless you issue a commit transaction. To accomplish
-     this auto-transaction behavior, the first statement and the first
-     statement after a commit or rollback always begins a new transaction. To
-     disable this feature, use the <option>-t</option> command-line
-     option.
+     In the default mode, queries are committed only when <command>exec
+     sql commit</command> is issued. <application>Ecpg</application>
+     also supports auto-commit of transactions via the
+     <option>-t</option> command-line option or via the <literal>exec
+     sql set autocommit to on</literal> statement. In
+     <literal>autocommit<literal> mode, each query is automatically
+     committed unless it is inside an explicit transaction block. This
+     mode can be explicitly turned off using <literal>exec sql set
+     autocommit to off</literal>.
     </para>
-
    </sect2>
   </sect1>
  </chapter>

doc/src/sgml/libpq.sgml

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-$Header: /cvsroot/pgsql/doc/src/sgml/libpq.sgml,v 1.85 2002/01/07 02:29:12 petere Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/libpq.sgml,v 1.86 2002/01/18 20:32:54 momjian Exp $
 -->
 
  <chapter id="libpq">
@@ -2109,10 +2109,17 @@ for information on correct values for these environment variables.
 <para>
 <filename>libpq</filename> is thread-safe as of
 <productname>PostgreSQL</productname> 7.0, so long as no two threads
-attempt to manipulate the same <structname>PGconn</> object at the same time.  In particular,
-you cannot issue concurrent queries from different threads through the same
-connection object.  (If you need to run concurrent queries, start up multiple
-connections.)
+attempt to manipulate the same <structname>PGconn</> object at the same
+time. In particular, you cannot issue concurrent queries from different
+threads through the same connection object. (If you need to run
+concurrent queries, start up multiple connections.)
+</para>
+<para>
+However, <filename>libpq</filename> clients using the
+<literal>crypt</literal> encryption method rely on the
+<literal>crypt()</literal> operating system function, which often is not
+thread-safe. It is better to use <literal>MD5</literal> encryption,
+which is guarantted to be thread-safe on all platforms.
 </para>
 
 <para>

doc/src/sgml/ref/ecpg-ref.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/ecpg-ref.sgml,v 1.16 2002/01/06 18:12:00 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/ecpg-ref.sgml,v 1.17 2002/01/18 20:32:54 momjian Exp $
 PostgreSQL documentation
 -->
 
@@ -57,7 +57,10 @@ PostgreSQL documentation
       <term>-t</term>
       <listitem>
        <para>
-	Turn on auto-commit of transactions.
+	Turn on auto-commit of transactions. In this mode, each query is
+	automatically committed unless it is inside an explicit
+	transaction block. In the default mode, queries are committed
+	only when <command>exec sql commit</command> is issued.
        </para>
       </listitem>
      </varlistentry>
@@ -404,32 +407,6 @@ EXEC SQL COMMIT;
    missing features.
   </para>
 
-<!--
-.SH FILES
-.PD 0
-.TP
-.B /usr/src/pgsql/postgresql-${ver}/src/interfaces...
- ./ecpg/include.......source for \fIecpg\fP header files.
- ./ecpg/lib...........source for \fIecpg\fP libraries.
- ./ecpg/preproc.......source for \fIecpg\fP header files.
- ./ecpg/test..........source for \fIecpg\fP libraries.
- (test contains examples of syntax for ecpg SQL-C.)
-.PD
-.TP
-.B /usr/local/pgsql/bin 
-\fIPostgreSQL\fP binaries including \fIecpg\fP.
-.PD
-.TP
-.B /usr/local/pgsql/include 
-\fIPostgreSQL\fP headers including \fIecpglib.h\fP \fIecpgtype.h\fP 
-and \fIsqlca.h\fP.
-.PD
-.TP
-.B /usr/local/pgsql/lib 
-\fIPostgreSQL\fP libraries including \fIlibecpg.a\fP and 
-\fIlibecpg.so\fP.
--->
-
  </refsect1>
 </refentry>