doc-src/TutorialI/CTL/ctl.tex

removed duplicate sum_case used only by function package;
moved projections;
hide (open)

\index{model checking example|(}%
\index{lfp@{\texttt{lfp}}!applications of|see{CTL}}
\input{CTL/document/Base.tex}
\input{CTL/document/PDL.tex}
\input{CTL/document/CTL.tex}
\index{model checking example|)}