Function fopt = optionformat_default returns a struct fopt, with minimal data: fopt.table = cell(0,4); fopt.icol.key = 1; fopt.icol.isunbound = 2; fopt.icol.nsuffix = 3; fopt.icol.nfree = 4; where fopt.icol.XXX holds the column index of column "XXX" in the two-dimensional cell-array fopt.table. No keys are specified. See the help text of m-file optioninfo.m for further explanation. (c) 2026 fabien van mook 2026.08.20 release of this file within package "fvm-optionmanip" under GNU GPLv3+