This vector is used to describe the structure of the rows of the contrast
matrix cmat. The number of entries in cinfo mirrors the number of experimental
questions. "1" indicates a contrast in vectorial form, integers n > 1 indicate $n$
contrasts given in matrix form.
Arguments
References
Bretz, F and Landgrebe J and Brunner E (2003):"Design and analysis of
two colour factorial microarray experiments", submitted.