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REW format
The REW format is identical to the MPS
format, except in how objects are named when files are written. When
writing an MPS format file, the Gurobi Optimizer refers to constraints
and variables using their given names. When writing an REW format
file, the Gurobi Optimizer ignores the given names and instead refers
to the variables using a set of default names that are based on row
and column numbers. The constraint name depends solely on the associated
row number: row i gets name ci. The variable name depends on the type of
the variable, the column number of the variable in the constraint matrix,
and the number of non-zero coefficients in the associated column. A
continuous variable in column 7 with column length 2 would get name
C7(2), for example. A binary variable with the same characteristics would
get name B7(2).
