\setcounter{errorcontextlines}{100}
\listfiles
\documentclass[twoside,a4paper,showtrims]{memoir}
%------------------------------------
\stockaiii
\setlength{\trimedge}{\stockwidth}
\addtolength{\trimedge}{-\paperwidth}
\setlength{\trimedge}{.25\trimedge}
\setlength{\trimtop}{\stockheight}
\addtolength{\trimtop}{-\paperheight}
\setlength{\trimtop}{.25\trimtop}
\checkandfixthelayout
%------------------------------------
\usepackage{eso-pic}
\usepackage{pict2e,showframe}

\AddToShipoutPicture{%
  \AtPageLowerLeft{\circle*{40}}%
  \AtPageUpperLeft{\circle*{40}}%
  \AtPageCenter{\circle*{40}}%
  \AtTextLowerLeft{\circle*{15}}%
  \AtTextUpperLeft{\circle*{15}}%
  \AtStockLowerLeft{\circle*{40}}%
  \AtStockUpperLeft{\circle*{40}}%
  \AtStockCenter{\circle*{40}}%
}

\begin{document}  \Huge \bfseries

\noindent
\hrulefill First Page\hrulefill
\vfill
\noindent
X \hfill X
\newpage
\noindent
\hrulefill Second Page\hrulefill
\vfill
\noindent
X \hfill X

\end{document}