********************************TRAWLS*********8***********************
Files functions and covfunctions are for analyzing trawl data.
Simply source both files e.g. > source("functions")
                              > source("covfunctions")
and all necessary functions are defined.

See haddock.example

********************************GILLNETS********************************
File gillnets.S contains code for fitting normal (location and scale family),
gamma, lognormal , and inverse Gaussian selection curves to gillnet catch
data.  An optional argument (rel) to the netfit function allows for 
specification of different fishing efficiencies/efforts of the mesh sizes.

See end of gillnets.S for an example.