printProgressBar.m
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			function printProgressBar(obj,fraction,varargin)
			% The length of the progress bar is the only optional argument.
			% The progress bar default length is 20 characters.

			if nargin == 3
			progressBarLength = varargin{1};
			else
			progressBarLength = 20;
			end

			numberOfProgressCharacters = fix(progressBarLength*fraction);
			obj.progressBar = ['[',...
			repmat('=',1,numberOfProgressCharacters),...
			repmat(' ',1,progressBarLength-numberOfProgressCharacters),...
			']'];

			obj.print();
			end

R8218/utils/@UpdatableText/printProgressBar.m782f6576c101master