Name
wrap — 
		    Split a string on newlines. 
		
Synopsis
::rivet::wrap  ?string? ?maxlen? html
Description
			
		    For each line, wrap the line at a space character to be 
		    equal to or shorter than the maximum length value passed.
		
		    If a third argument called "-html" is present, the string is put together
		    with html <br> line breaks, otherwise it's broken with newlines.