function help_io(self)%    Coastline data consist of counter-clockwise closed contours,% separated by NaNs. The geographic positions must be stored in a% Matlab mat-file, using the variable names "lon" and "lat", in degrees.% The current coastline data can be replaced at any time, using the% "SeaGrid/Load/Coastline" menu item.%%    Bathymetric data consist of arrays of points, stored in a mat-file% under the names "xbathy", "ybathy", and "zbathy", corresponding to% longitude, latitude (both degrees), and positive depth (arbitrary% units), respectively.  The current bathymetric data can be replaced% at any time, using "SeaGrid/Load/Bathymetry".%%    The current SeaGrid gridwork can be saved to a mat-file, using the% "SeaGrid/Save" or "SeaGrid/Save As" menu item, then later retrieved% with "Seagrid/Load" or "SeaGrid/Revert To Saved".  The grid and its% associated data are stored in a Matlab "struct" named "s".  For an% M-by-N grid, the grid-corners occupy an (M+1)-by-(N+1) array, while% the gridded bathymetry and mask are stored as M-by-N arrays,% corresponding to the grid-cell centers.% %%    To convert a SeaGrid file to Ecom or Scrum format, use the% "seagrid2ecom" or "seagrid2scrum" routines.  See their respective% "help" entries. % Copyright (C) 1999 Dr. Charles R. Denham, ZYDECO.%  All Rights Reserved.%   Disclosure without explicit written consent from the%    copyright owner does not constitute publication. % Version of 25-May-1999 16:27:20.% Updated    03-Apr-2000 11:50:02.seagrid_helpdlg(help(mfilename), 'SeaGrid Input/Output')