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% Prompt user for key press, optionally printing a message that is

% automatically divided into multiple lines.

function wait(varargin)

linelen = 80;

msg = cellfun(@num2str, varargin, 'uniformoutput', 0);

msg = sprintf('%s ', msg{:});

if length(msg) > 1

msg(end) = newline(); % Replace space.

increment = linelen + 1;

space = char(32);

old = 1;

pos = increment;

while pos < length(msg)

while msg(pos) ~= space && pos > old

pos = pos - 1;

end

if pos == old

pos = pos + increment;

while msg(pos) ~= space && pos < length(msg)

pos = pos + 1;

end

end

if msg(pos) == space && pos < length(msg)

msg(pos) = newline();

end

old = pos;

pos = pos + increment;

end

fprintf(msg);

end

fprintf('Press any key to continue ...');

pause();

fprintf(' resuming\n\n');