====== obj.Help ======

===== Motivation =====
This function is a means to get help on a specific method of a given object.

===== Reference ('obj.Help('Help')') =====
<file> AFT::Help  - method for any xff type
 
 FORMAT:       [helptext] = obj.Help([methodname, onerror]);
 
 Input fields:
 
       methodname  if given, only the help for one method is returned
       onerror     checks global flag and only returns help if requested
 
 Output fields:
 
       helptext    1xN char array describing all (or one) method(s)
 
 TYPES: ALL</file>

===== Usage example =====
<code matlab obj_Help_example.m>% loading a protocol
prt = xff('*.prt');

% getting help on the prt.CreateSDM method
prt.Help('CreateSDM')</code>