If the option file=>fn with a String fn is given then the result of the computation is stored in the file fn.
This works only when using the package ConvexInterface.
The object file is a symbol.
The source of this document is in /__w/M2/M2/macaulay2-1.26.05+ds/M2/Macaulay2/packages/SRdeformations.m2:7801:0.