[R] R: pp plot

[Clark Allan]

hi all

i would like to know if anyone has a reference on how one would place
the "bands" on the pp plot.

i want to test whether or not a certain data set comes from a particular
distribution (not normal).

i've already plotted F(X(j)) vs j/(n+1)	where F(x) is the cum dist
function, X(j) is the j'th order statistic and n is the sample size. 

a goole search gave arb references and thought some one one the list
should definitely know how to solve this problem.

thanking you in advance
allan