The HTML <wbr> tag defines a potential line break point if needed. This stands for Word Break Opportunity.
<!DOCTYPE html>
<html>
<head>
<title>HTML wbr Tag</title>
</head>
<body>
<wbr />
the browser to extend the document window beyond the size of the viewing pane and the poor user must scroll right
<wbr />
</body>
</html>
This will produce following result:
the browser to extend the document window beyond the size of the viewing pane and the poor user must scroll right