I use the tocloft package to design the Table of Contents. I wanted to add the word Part before the numbers of parts in TOC (f.e. using \cftpartpresnum), but I want to add it only for numbered parts. For example I want to have:

Intro ..... 1
Part I Lalala ...2
Part II Lalalala...4
Conclusion ....6


Is it possible? \cftpartpresnum adds to all parts.

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Probably not the most elegant way: Add appropriate redefinitions of \cftpartpresnum to the .toc file using the \addtocontents macro. (Note: I'm using the tocvsec2 package to add unnumbered parts to the ToC.)

\documentclass{book}

\usepackage{tocloft}
\usepackage{tocvsec2}

\begin{document}

\setsecnumdepth{none}

\tableofcontents

\part{Intro}

\resetsecnumdepth

\part{First part}

\part{Second part}

\setsecnumdepth{none}

\part{Conclusion}

\end{document}

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Thank you for the answer! Unfortunately, I can not make it, I copy-paste into LaTex and it gives the following error: "Undefined control sequence \resetsecnumdepth"... –  Natalia Oct 13 '11 at 21:00
@Natalia: You have to load the tocvsec2 package. –  lockstep Oct 14 '11 at 5:21
Thank you!!! It works on my desktop at work, don't know why it did not work yesterday at my laptop. But here I have been already using the \tocvsec2 package (following your advise with \minitoc). Should I download manually \tocvsec2 in such case to my laptop? where should i copy it? –  Natalia Oct 14 '11 at 8:57
@Natalia: See tex.stackexchange.com/questions/1137/… –  lockstep Oct 14 '11 at 15:14
Thank you for your help! –  Natalia Oct 15 '11 at 9:17