Express trans_db with Option.map and Option.bind. Possibly mbind is a copy of bind?
\documentclass[14pt,t]{beamer}
%%%\usepackage{pstricks}
\input{root.tex}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% TeX-command-default: "Slides"
%%% TeX-view-style: (("." "kghostview --landscape --scale 0.45 --geometry 605x505 %f"))
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