diff --git a/reference/paradox/functions/px-set-parameter.xml b/reference/paradox/functions/px-set-parameter.xml
index 21337197f5..9bde27b626 100644
--- a/reference/paradox/functions/px-set-parameter.xml
+++ b/reference/paradox/functions/px-set-parameter.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <!-- splitted from ./en/functions/paradox.xml, last change in rev  -->
 <refentry id="function.px-set-parameter">
  <refnamediv>
@@ -28,6 +28,8 @@
      <term><parameter>pxdoc</parameter></term>
      <listitem>
       <para>
+       Resource identifier of the paradox database
+       as returned by <function>px_new</function>.
       </para>
      </listitem>
     </varlistentry>
@@ -35,7 +37,8 @@
      <term><parameter>name</parameter></term>
      <listitem>
       <para>
-       <parameter>name</parameter> can be one of the following.
+       Depending on the parameter you want to set, <parameter>name</parameter>
+       can be one of the following.
       </para>
        <variablelist>
         <varlistentry>
@@ -71,6 +74,9 @@
      <term><parameter>value</parameter></term>
      <listitem>
       <para>
+       The value of parameter to set. For inputencoding and targetencoding
+       this must be the name of the encoding as understood by iconv or
+       recode, e.g. iso-8859-1, utf-8, cp850.
       </para>
      </listitem>
     </varlistentry>