hi andreas, r-cran-hypergeo is good to go! with thanks jonathon -- JASP - A Fresh Way to Do Statistics http://jasp-stats.org/ -- How happy is he born and taught, That serveth not another's will; Whose armour is his honest thought, And simple truth his utmost skill This man is freed from servile bands Of hope to rise, or fear to fall: Lord of himself, though not of lands, And, having nothing, yet hath all. -- Sir Henry Wotton