Number of rows to generate 200 Number of columns (species) to generate 30 Source of random number seeds (0=use time, 1=user supplied) 0 Seed for random number generator (positive integer, used only if source = user supplied) 1 Maximum intrinsic growth rate (default=2.) 2. Average number of generations to run model (positive real, default=20.) 20. Range in number of generations (half above, half below the mean; nonnegative real, default =10., not > half of preceding) 1. Community-level carrying capacity (positive real, default=1000.) 1000. Spread of species response function to environment (positive real, default =30. on environmental gradient of -20 to 120) 30. Dispersal limitation factor (positive real, default=1.) 1. Number of environmental factors (positive integer, default=1) 2 Environmental factor weighting (0=equal, 1=descending linear, 2=descending series, broken stick) 0 Run loops (0=no, 1=yes) 0 Reps per innermost loop 3 Loop through generations (0=no, 1=yes; 1, 10, increment 1) 1 Loop through tolerances (0=no, 1=yes; spread of spp response, 5, 40, increment 5) 1 Loop through dispersal limitation factor (0=no, 1=yes; 1, 20, increment 1) 1 Write intermediate results 0 Write main matrix as X or log(X+1) (0=X, 1 = log(X+1), default=1) 0