RefTeX is a specialized package for support of labels, references,
citations, and the index in LaTeX. RefTeX wraps itself round four
\index. Using these macros usually requires looking up different
parts of the document and searching through BibTeX database files.
RefTeX automates these time-consuming tasks almost entirely. It also
provides functions to display the structure of a document and to move
around in this structure quickly.
See Imprint, for information about who to contact for help, bug reports or suggestions.