[Cbc] [CBC] SOS objects in LP format

[mg]

Hi All,
I would like to know if it's possible to include SOS objects definition in
the LP file.

SOS objects are quite commonly used and would be really useful if they were
included in the LP file.
(LPs can be easily used to reproduce issues on CLI CBC, to try the same
problem other solver like CPLEX/GUROBI etc.)

CPLEX lp format definition seems to include them :

http://pic.dhe.ibm.com/infocenter/cosinfoc/v12r2/index.jsp?topic=%2Filog.odms.cplex.help%2FContent%2FOptimization%2FDocumentation%2FCPLEX%2F_pubskel%2FCPLEX876.html


Is it already possibile or maybe can be included in a future release ?

Thanks,
Marco
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