Including section in table of contents without its page number

Question

How do I include something from an unnumbered page in table of contents?

Also: How can I add something with a page number to the table of contents without the page number being displayed?

Answer 1

There are two commands to explicitly insert material in the table of contents:

\addtocontents{ext}{text}

and

\addcontentsline{ext}{type}{text}

where ext is the table of contents type (e.g., toc, lof) and type indicates how the text is going to be formatted (you can create new types by defining new \l@type commands).

\addcontentsline adds the page number, while \addtocontents adds text to ext.