The advanced feature lazy constraints can be declared in a special section following the ROWS and USERCUTS sections. The title of this section is LAZYCONS. The order of sections must be ROWS USERCUTS LAZYCONS. The format of the LAZYCONS section is the same as the format of the ROWS section with this exception: the type must be one of E, L, or G; the row must not be ranged. For more information about lazy constraints and an example of an MPS file extended to include them, see User-Cut and Lazy-Constraint Pools in the ILOG CPLEX User's Manual.
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