The package below has been updated at tug.ctan.org and should soon be at your favorite mirror. (Please note that the location of this package has changed.)

Thank you, Jim Hefferon Saint Michael's College

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The following information was provided by our fellow contributor:

Name of contribution: siunitx Author's name: Joseph Wright Location on CTAN: /macros/latex/contrib/siunitx Summary description: A comprehensive (SI) units package License type: lppl

Announcement text: ----------------------------------------------------------------------

-------------------------------------------------------------- The siunitx package --- A comprehensive (SI) units package -------------------------------------------------------------- Typesetting values with units requires care to ensure that the combined mathematical meaning of the value plus unit combination is clear. In particular, the SI units system lays down a consistent set of units with rules on how these are to be used. However, different countries and publishers have differing conventions on the exact appearance of numbers (and units).

The siunitx provides a set of tools for authors to typeset numbers and units in a consistent way. The package has an extended set of configuration options which make it possible to follow varying typographic conventions with the same input syntax. The package includes automated processing of numbers and units, and the ability to control tabular alignment of numbers.

A number of LaTeX packages have been developed in the past for formatting units: SIunits, sistyle, unitsdef, unitspkg, fancyunits and fancynum. Support for users of all of these packages is available as emulation modules in siunitx. In addition, siunitx can carry out many of the functions of the dcolumn, rccol and numprint packages.

-------------------------------------------------------------- Release Notes for Version 1.0 -------------------------------------------------------------- This is the first full release of siunitx, and is now considered stable.

Users upgrading from the earlier test release v0.8d should note the following changes, which may require alteration of their source: - The option tabalign now covers all alignment in columns provided by siunitx. The previous effect of tabalign is now available as the tabnumalign option. - The column type s in version 0.8d has been renamed to S (note change of case). This is to accommodate a column for units alone, which now takes the letter s. There are also a number of new or improved features and bug fixes compared to the last testing release.

TeX distribution maintainers are encouraged to add siunitx to their bundles. The package is supplied with a TDS-ready archive, containing the pre-built documentation, to make this process easier.

-------------------------------------------------------------- Status of SIunits -------------------------------------------------------------- With this release of siunitx, the existing SIunits package moves to maintenance-only status. No further features will be added to SIunits: only existing bugs will be fixed. Users of SIunits are encouraged to move to siunitx, which includes all of the abilities of the SIunits package.

-------------------------------------------------------------- Future plans -------------------------------------------------------------- Requests for new features for the next release (v1.1) are very welcome. Some ideas have already been supplied during the final testing phase for this release.

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This package is located at http://tug.ctan.org/tex-archive/macros/latex/contrib/siunitx . More information is at http://tug.ctan.org/pkg/siunitx (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .