% error: print (filename, options)
%
% Print a graph, or save it to a file
%
% filename:
% File to receive output. If no filename is specified, output is
% sent to the printer.
%
% options:
% -Pprinter
% Printer to which the graph is sent if no filename is specified.
%
% -color | -mono
% Monochrome or colour lines.
%
% -portrait | -landscape
% Plot orientation, as returned by 'orient'.
%
% -dDEVICE
% Output device, where DEVICE is one of:
%
% ps,ps2,psc,psc2
% Postscript (level 1 and 2, mono and color)
% eps,eps2,epsc,epsc2
% Encapsulated postscript (level 1 and 2, mono and color)
% png Portable network graphics
% svg Scalable vector garphics
% jpg JPEG image
% pbm 1-bit portable graphics
% pgm grayscale portable graphics
% ppm full-color portable graphics
% mif FrameMaker Interchange Format
% gmf CGM Graphics Metafile
%
% Other devices are supported by 'convert' from ImageMagick. Type
% system('convert') to see what formats are available.
%
% If the device is omitted, it is inferred from the file extension,
% or if there is no filename it is sent to the printer as postscript.
%
% The filename and options can be given in any order.
%
% If you are using Octave 2.1.x or above, mark_as_command('print')
% will change print from a function to a command, so instead of typing
% print('-depsc', 'out.ps')
% you can type
% print -depsc out.ps
%
% See also: orient, mark_as_command