MP Model Builder add-in constructs linear and integer
optimization models.The add-in constucts forms to hold the variables,
constraints, and constraint coefficients for the linear model.
Four alternative formats are available. They differ on the
placement and orientation of the variables and constraints.
A new feature stores constraint coefficients in a list rather
than in a table.
The MP Model Builder add-in was modified on 2/20/2011 to allow
column list models to have more than 32,000 nonzero coefficients.