World: r3wp

the function is called get-word-wrap in the glayout lib (on rebol.org)

Geomol, there are some subtle bugs that I've not been able to figure 
out, causing certain layouts not to print, so I stick to a specific 
version right now.

It's a little annoying having only a 1-2 week window a year to work 
with postscript.

get-word-wrap can even return the pair size next to the lines, if 
you need the info to properly place the text   :-)