umx depends on OpenMx.

See the umx and OpenMx home pages for more.

 - (\url{http://github.com/tbates/umx})
  - (\url{http://openmx.psyc.virginia.edu})

Note: In addition to the version of OpenMx on CRAN, an advanced (parallel and
NPSOL-enabled) version of OpenMx is available from
\url{http://openmx.psyc.virginia.edu}. To install it use:

source('http://openmx.psyc.virginia.edu/getOpenMx.R')
