function flag = islinear(m)
% islinear  True for models declared as linear.
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% Syntax
% =======
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%     flag = islinear(m)
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% Input arguments
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% * `m` [ model ] - Queried model object.
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% Output arguments
% =================
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% * `flag` [ `true` | `false` ] - True if the model has been declared linear.
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% Description
% ============
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% Example
% ========
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% -IRIS Toolbox.
% -Copyright (c) 2007-2012 Jaromir Benes.

%**************************************************************************

flag = m.linear;

end