= { { "x", 0, "Coordinate" },
{ "z", 0, "Variable" },
{ "v", 0, "Variance of measurement error" },
{ "f", 0, "External Drift" },
{ "g", 0, "Gradient component" },
{ "lower", 0, "Lower bound of an inequality" },
{ "upper", 0, "Upper bound of an inequality" },
{ "p", 0, "Proportion" },
{ "w", 1, "Weight" },
{ "code", 1, "Code" },
{ "sel", 1, "Selection" },
{ "dom", 1, "Domain selection" },
{ "dblk", 0, "Block Extension" },
{ "adir", 1, "Dip direction angle" },
{ "adip", 1, "Dip angle" },
{ "size", 1, "Object height" },
{ "bu", 1, "Fault UP termination" },
{ "bd", 1, "Fault DOWN termination" },
{ "time", 0, "Time variable" },
{ "layer", 1, "Layer rank" },
{ "nostat", 0, "Non-stationary parameter" },
{ "tangent", 0, "Tangent" },
{ "ncsimu", 0, "Non-conditional simulation" },
{ "facies", 0, "Facies simulated" },
{ "gausfac", 0, "Gaussian value for Facies" },
{ "date", 1, "Date" },
{ "rklow", 0, "Disc. rank for Lower bound" },
{ "rkup", 0, "Disc. rank for Upper bound" },
{ "sum", 0, "Constraints on the sum" }
}