CHANGES IN VERSION 1.8.1 BUG FIXES o "exlude" arg in the gContainer construction now can be used when whole plates are excluded. NEW FUNCTION o "exlude<-" is defined as generic and can be used to exclude wells from an existing container object. CHANGES IN VERSION 1.6.0 BUG FIXES o "arguments imply differing number of rows:" error when some categories of samples are small. CHANGES IN VERSION 1.4.1 BUG FIXES o program quit when number of samples is equal to number of available wells.