function plotlyref = plotlyhelp(varargin)

% [EX]: plotlyhelp('scatter','fill');

%converts graph_obj_meta.json to struct/cell array and outputs key

plotlyref = load('plotly_reference.mat');

pr = plotlyref.pr;

pr.online = 'Access the online docs!';

try

switch length(varargin)

case 0

plotlyref = pr;

case 1

if (strcmpi('online', varargin{1}));

web('http://plot.ly/matlab/','-browser')

else

plotlyref = pr.(lower(varargin{1}));

end

case 2

plotlyref = pr.(lower(varargin{1})).(lower(varargin{2}));

case 3

plotlyref = pr.(lower(varargin{1})).(lower(varargin{2})).(lower(varargin{3}));

case 4 %does the struct nesting ever go beyond 4?

plotlyref = pr.(lower(varargin{1})).(lower(varargin{2})).(lower(varargin{3})).(lower(varargin{4}));

end

catch exception

fprintf(['\n\nSorry! We could not find what you were looking ' ...

'for. Please specify a valid Plotly reference.\n\n']);

end