Attempt to fix issue 583

steps/src/main/xml/steps/insert.xml

@@ -13,7 +13,7 @@ port's document relative to the matching elements in the
 <p:declare-step type="p:insert">
    <p:input port="source" primary="true" content-types="xml html"/>
    <p:input port="insertion" sequence="true" content-types="xml html text"/>
-   <p:output port="result" content-types="xml html"/>
+   <p:output port="result" content-types="xml html text"/>
    <p:option name="match" as="xs:string" select="'/*'" e:type="XSLTSelectionPattern"/>
    <p:option name="position" values="('first-child','last-child','before','after')" select="'after'"/>
 </p:declare-step>
@@ -62,14 +62,17 @@ as the source.</para>
 
 <simplesect>
 <title>Document properties</title>
-<para feature="insert-preserves-all">All document properties on the
-<port>source</port> port are preserved. The document properties on the
-<port>insertion</port> port are not preserved or present in the result document.</para>
+<para feature="insert-preserves-partially">If the resulting document contains exactly one text node,
+the <literal>content-type</literal> property is changed to <literal>text/plain</literal> and the 
+<literal>serialization</literal> property is removed, while all other document properties are 
+preserved. In all other cases, all document properties are preserved.</para>
 </simplesect>
 
 <simplesect>
 <title>Erratum, April 2024</title>
 <para>The content type of the <port>insertion</port> port has been expanded to allow
 text documents to be inserted.</para>
+   <para>Port "result" can now have a text-document. Section "document properties" was
+      changed accordingly.</para>
 </simplesect>
 </section>