To avoid singularities during complex path following, the homotopy methods use a random constant. Different runs with solveSystem, trackPaths, or mixedVolume (with StartSystem set to true) may therefore lead to the solutions listed in a different order. Fixing the value of randomSeed leads to reproducible runs.
The object randomSeed is a symbol.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/PHCpack/PHCpackDoc.m2:626:0.