386         mg = varargin{na+1};
0387         inc = 2;
0388     <span class="keyword">end</span>;
0389     <span class="keyword">if</span> (strcmp(varargin{na},<span class="string">'cut'</span>)) <span class="comment">% positive scalar.</span>
0390         cut = varargin{na+1};
0391         inc = 2;
0392     <span class="keyword">end</span>;
0393     <span class="keyword">if</span> (strcmp(varargin{na},<span class="string">'module'</span>)) <span class="comment">% string.</span>
0394         mdl = s