9. **Paragraph filling**: formatting text
*****************************************

The package *GNATCOLL.Paragraph_Filling* provides several algorithms
for filling paragraphs—formatting them to take up the minimal number
of lines and to look better. *Knuth_Fill* is based on an algorithm
invented by Donald Knuth, and used in TeX. *Pretty_Fill* uses a
different algorithm, which was judged by some to produce more
aesthetically pleasing output.

More detailed documentation may be found in the comments in the
package spec.