Good Game Well Played

G = groupsummary(T,groupvars)
G = groupsummary(T,groupvars,method)
G = groupsummary(T,groupvars,method,datavars)
G = groupsummary(T,groupvars,groupbins)
G = groupsummary(T,groupvars,groupbins,method)
G = groupsummary(T,groupvars,groupbins,method,datavars)
G = groupsummary(T,___,Name,Value)
B = groupsummary(A,groupvars,method)
B = groupsummary(A,groupvars,groupbins,method)
B = groupsummary(A,___,Name,Value)
[B,BG] = groupsummary(A,___)
[B,BG,BC] = groupsummary(A,___)