Hi
During using the R(vision 2.0.1), I meet a problem. I would like to do the 
Multiple Correspondence Analysis, but when I use the "< mca(lf, nf = 2, abbrev = 
FALSE)", the sentence "Error: couldn't find function 'mca'" will appear. So, 
please tell me how can I use the "mca()", thanks!
                         Any help appreciated.... 
                                                                  jeff