gcols: The column principal or standard coordinates.
firstaxis: The first axis number.
lastaxis: The second axis number.
inertiapc: The percentage of the explained inertia by each dimension.
bip: The type of biplot. One may specify a row-isometric biplot or a column-isometric biplot (when using in the function plot.CAvariant the parameter biptype = "row" or biptype = "column").
size1: The size of the plotted symbol for categories in biplot.
size2: The size of the plotted text for categories in biplot.
References
Beh EJ and Lombardo R 2014 Correspondence Analysis: Theory, Practice and New Strategies. Wiley.
Lombardo R Beh EJ 2016 Variants of Simple Correspondence Analysis. The R Journal, 8 (2), 167--184.