Comments in code for orientation not clear

Dear Sirs

I've got a matlab code to use for PV parameter estimation

My problem is that the code seems to be not complete or need some specification from me

The author developper write some comments as orientation in order to add inputs but it is vague

Can anyone try to translate the comment or the intention of it ?

% Parameter Extraction from least-square fitting
% Numerical Differentiation is performed using Quasi-Newton Line Search
% ------------------------------------------------------------------------

% ---------------------------Output generated-----------------------------
% res.iter: nIter - Total number of iterations 
% res.v: Least Square cost function vector [1 x nIter]
% res.delv: Gradient column vector [1 x nIter]
% res.aold: Parameters [nPara x (nIter + 1)]
% res.dela: Delta paramters [nPara x nIter]
% res.normDelCheck: || dela/a ||_2 [1 x nIter]
% ------------------------------------------------------------------------

% ------------------------------------------------------------------------
% Pragya Sharma, March 30 2017
% [e-mail]
% ------------------------------------------------------------------------

function [res] = paraExtractLS(par)
    
    % --------------------Set up needs input from user--------------------
    % par.sMeas: Measurement data 
    % ---------- last column: Output variable
    % ---------- First to (last - 1) columns: Variables
    % par.sMod: Function handle to Model function
    % par.a0: Initial parameter input column vector
    % par.h: Numerical differentiation step size column vector
    % par.mode: 
    % ---------'QN': Quasi-Newton 
    % -------------: Can insert your own Numerical Differentiation Method
    % par.maxIter: Maximum number of iterations
    % par.ls: Line Search Yes or No
    % par.tol: Tolerance on converging condition
    % --------------------------------------------------------------------
    
    % --------------------------------------------------------------------
    % Setting up problem

[Walter Roberson]

The comments describe the expected input par -- it is expected to be a struct with the given fields, sMeas, sMod, a0, h, mode, maxIter, ls, and tol

[YASSER]

So this mean that the author is expecting from the user to enter these inputs without clarifying what does it mean exactly ?