function [acorr] = correct(a)
Description: "The ultimate cheating program": This programs helps to find
outliers in data. This program is very helpful to check
manually (or even automatically) digitized markers.
Input: a: Data that should be corrected/ screened.
"a" has to be a vector.
Output: acorr: Corrected data or if no corrections were used "acorr"
is identical to "a".
Author: Christoph Reinschmidt, HPL, The University of Calgary
Date: September, 1994,
Last Changes: November 29, 1996
Version: 1.0