this file:  http://www.frankb.us/linux/adjust/adjust-1.0/README

adjust is a c program for formating paragraphs that is very useful as a
macro in vim.  adjust was written using the source code for an early
version of the "fmt" command and adding some new features.  From the
man page:

This command is a simple text formatter for filling, centering, left and
right justifying, or right-justifying text paragraphs, designed for
interactive use.  It reads the concatenation of input files (or standard
input if none are given) and produces on standard output a formatted
version of its input, with each paragraph formatted separately.

compile with:
gcc -ansi -o adjust adjust.c

In your .exrc or .vimrc file:

" ADJUST & SORT
"
map ^K {!}adjust -m72^M}
"^K, create a paragraph with 72 character lines

map ^W {!}adjust -rm60^M}
"^W, create a paragraph with 60 character lines, right justified

map ^[r {!}adjust -c -m36^M}
"<esc>r, centers text of paragraph around column 36

map ^[q {!}adjust -m
"<esc>q, allows user to type in length of line for adjust to use

" is a comment line in these files
^[ is <esc> make with <cntr>v<esc>