Blurb::
Real-valued discrete design variables

Description::
A design variable whose values come from a specified set of admissible
reals.  The details of how to specify this discrete variable are
located on the \ref topic-discrete_variables page.

Topics:: 	discrete_variables, design_variables

Examples:: 
Two continuous, restricted variables whose values will be selected
from the following sets during the search for an optimal design. \f$y1
\in \{0.25,1.25, 2.25, 3.25, 4.25\}\f$, \f$y2 \in \{0,5\}\f$

\verbatim
discrete_design_set
  real 2
    descriptors           'y1'                       'y2'
    elements_per_variable 5                          2
    elemetns              0.25 1.25 2.25 3.25 4.25   0 5
\endverbatim

Theory::
Faq::
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