In several examples in the help file, there is a ~ (a tilda) before the table/group call, like this
1,[~CharGen.Start(3,)] //(G=3, C=default)//
1,[~CharGen.Start(,4)] //(G=default, C=4)//
1,[~CharGen.Start(,)] //(G and C default)//
1,[~CharGen.Start] //(G and C default)//
Anybody know what the sinifigance is?