I'd like to use a `picture` environment in order to position the elements of the title page in ltx-talk.

If I try something like

```
\DocumentMetadata{
  tagging=on,
  pdfstandard=ua-2,
  lang=en-US
}
\documentclass{ltx-talk}

\author{names}
\title{text}

\makeatletter
\ExplSyntaxOn
\DeclareTemplateInterface { titlepage } { talk } { 0 } { }
\DeclareTemplateCode { titlepage } { talk } { 0 } { } {
  \begin{picture}(10cm,5cm)(0,0)
    \put(3cm,3cm){
      \UseInstance { titlepage-element } {title} { \@title }
    }
    \put(0cm,0cm){
      \UseInstance { titlepage-element } {author} { \@author }
    }
  \end{picture}
}
\ExplSyntaxOff
\makeatother

\begin{document}

\begin{frame}
  \maketitle
\end{frame}

\end{document}

```

it will results in a XML structure like this:

```
+<P
  xmlns="http://iso.org/pdf2/ssn"
  id="ID.07"
  xmlns:Layout="http://iso.org/pdf/ssn/Layout"
  Layout:TextAlign="Start"
  xmlns:orig-ns="https://www.latex-project.org/ns/dflt"
  rolemapped-from="orig-ns:text"
>
  <?MarkedContent page="1" ?>
  +<Figure
    xmlns="http://iso.org/pdf2/ssn"
    id="ID.08"
    alt="picture environment"
    xmlns:Layout="http://iso.org/pdf/ssn/Layout"
    Layout:BBox="{ 28.34645, 68.0315, 311.81102, 209.76378 }"
  >
    <?MarkedContent page="1" ?>
    textnames       
  </Figure>
  <?MarkedContent page="1" ?>
</P>
```

Is there any possibility go get a XML structure similar to what ltx-talk produces by default:

```
+<Title
  xmlns="http://iso.org/pdf2/ssn"
  id="ID.007"
>
  +<P
    xmlns="http://iso.org/pdf2/ssn"
    id="ID.008"
    xmlns:Layout="http://iso.org/pdf/ssn/Layout"
    Layout:TextAlign="Center"
    xmlns:orig-ns="https://www.latex-project.org/ns/dflt"
    rolemapped-from="orig-ns:text"
  >
    <?MarkedContent page="1" ?>
    text       
  </P>
</Title>
+<P
  xmlns="http://iso.org/pdf2/ssn"
  id="ID.009"
  xmlns:Layout="http://iso.org/pdf/ssn/Layout"
  Layout:TextAlign="Center"
  xmlns:orig-ns="https://www.latex-project.org/ns/dflt"
  rolemapped-from="orig-ns:text"
>
  <?MarkedContent page="1" ?>
  names      
</P>
```