more accurate treatment of option "editor_output_state", e.g. when changed via Isabelle/jEdit Plugin Options panel;
\index{model checking example|(}%
\index{lfp@{\texttt{lfp}}!applications of|see{CTL}}
\input{Base.tex}
\input{PDL.tex}
\input{CTL.tex}
\index{model checking example|)}